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Category: Mathematics

  • [Solved] Math Help

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    [>Precalculus homework help](https://www.sweetstudy.com/fields/mathematics-precalculus) Need more guidance with my College math course it consist of in-depth treatment of solving equations and inequalities; function properties and graphs; inverse functions; linear, quadratic, polynomial, rational, e…

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    Assignment Prompt & Instructions

    [>Precalculus homework help](https://www.sweetstudy.com/fields/mathematics-precalculus)

    Need more guidance with my College math course it consist of in-depth treatment of solving equations and inequalities; function properties and graphs; inverse functions; linear,

    quadratic, polynomial, rational, exponential and logarithmic functions with applications; systems of equations. I feel like I'm starting from 0 knowledge lol.

    The course does not end until April!!

    – 2 years ago

  • [Solved] data from a survey of university graduates which assessed, among other things, how frequently they exercised. The survey was completed by 470 graduates.

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    [>Statistics homework help](https://www.sweetstudy.com/fields/mathematics-statistics) In a prior example we evaluated data from a survey of university graduates which assessed, among other things, how frequently they exercised. The survey was completed by 470 graduates. In the prior example we used …

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    Assignment Prompt & Instructions

    [>Statistics homework help](https://www.sweetstudy.com/fields/mathematics-statistics)

    In a prior example we evaluated data from a survey of university graduates which assessed, among other things, how frequently they exercised. The survey was completed by 470 graduates. In the prior example we used the χ2 goodness-of-fit test to assess whether there was a shift in the distribution of responses to the exercise question following the implementation of a health promotion campaign on campus. We specifically considered one sample (all students) and compared the observed distribution to the distribution of responses the prior year (a historical control). Suppose we now wish to assess whether there is a relationship between exercise on campus and students' living arrangements. As part of the same survey, graduates were asked where they lived their senior year. The response options were dormitory, on-campus apartment, off-campus apartment, and at home (i.e., commuted to and from the university). The data are shown below.

    **No Regular Exercise**

    **Sporadic Exercise**

    **Regular Exercise**

    **Total**

    **Dormitory**

    32

    30

    28

    90

    **On-Campus Apartment**

    74

    64

    42

    180

    **Off-Campus Apartment**

    110

    25

    15

    150

    **At Home**

    39

    6

    5

    50

    **Total**

    255

    125

    90

    470

    Based on the data, is there a relationship between exercise and a student's living arrangement? Do you think where a person lives affect their exercise status? Here we have four independent comparison groups (living arrangement) and a discrete (ordinal) outcome variable with three response options. We specifically want to test whether living arrangements and exercise are independent.

    **Submission Instructions:**

    – Submit your assignment by 11:59 pm on Sunday.
    – It should include at least 2 academic sources, formatted and cited in APA.

    – [\
    \
    module6asigment2biostadistic.HEIC](https://www.sweetstudy.com/files/module6asigment2biostadistic-heic "module6asigment2biostadistic.HEIC")

    – 2 years ago

  • [Solved] in the following graphs, determine if the age and height would be considered normal or not normal distribution.

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    [>Statistics homework help](https://www.sweetstudy.com/fields/mathematics-statistics) Descriptive Statistics AGE HIGH Valid 69 69 Mean 45.928 1.689 Std. Deviation 9.753 0.068 Minimum 27.000 1.570 Maximum 71.000 1.93 – [\ \ IMG_0352.HEIC](https://www.sweetstudy.com/files/img-0352-heic "IMG_0352.HE…

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    [>Statistics homework help](https://www.sweetstudy.com/fields/mathematics-statistics)

    Descriptive Statistics

    AGE

    HIGH

    Valid

    69

    69

    Mean

    45.928

    1.689

    Std.

    Deviation

    9.753

    0.068

    Minimum

    27.000

    1.570

    Maximum

    71.000

    1.93

    – [\
    \
    IMG_0352.HEIC](https://www.sweetstudy.com/files/img-0352-heic "IMG_0352.HEIC")
    – [\
    \
    IMG_0353.HEIC](https://www.sweetstudy.com/files/img-0353-heic "IMG_0353.HEIC")
    – [\
    \
    IMG_0354.HEIC](https://www.sweetstudy.com/files/img-0354-heic "IMG_0354.HEIC")
    – [\
    \
    IMG_0355.HEIC](https://www.sweetstudy.com/files/img-0355-heic "IMG_0355.HEIC")
    – [\
    \
    IMG_0356.HEIC](https://www.sweetstudy.com/files/img-0356-heic "IMG_0356.HEIC")

    – 2 years ago

  • [Solved] Here’s an example where the Poisson distribution was used in a maternity hospital to work out how many births would be expected during the night.

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    [>Statistics homework help](https://www.sweetstudy.com/fields/mathematics-statistics) Here’s an example where the Poisson distribution was used in a maternity hospital to work out how many births would be expected during the night. The hospital had 3000 deliveries each year, so if these happened ran…

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    Assignment Prompt & Instructions

    [>Statistics homework help](https://www.sweetstudy.com/fields/mathematics-statistics)

    Here’s an example where the Poisson distribution was used in a maternity hospital to work out how many births would be expected during the night.

    The hospital had 3000 deliveries each year, so if these happened randomly around the clock 1000 deliveries would be expected between the hours of midnight and 8.00 a.m. This is the time when many staff is off duty and it is important to ensure that there will be enough people to cope with the workload on any particular night.

    The average number of deliveries per night is 1000/365, which is 2.74. From this average rate, the probability of delivering 0, 1, 2, etc babies each night can be calculated using the Poisson distribution. Some probabilities are:

    P(0) 2.740 e-2.74 / 0! = 0.065

    P(1) 2.741 e-2.74 / 1! = 0.177

    P(2) 2.742 e-2.74 / 2! = 0.242

    P(3) 2.743 e-2.74 / 3! = 0.221

    (i) On how many days in the year would 5 or more deliveries be expected?

    (ii) Over the course of one year; what is the greatest number of deliveries expected on any night?

    (iii) Why might the pattern of deliveries not follow a Poisson distribution?

    Note: In this real-life example, deliveries in fact followed the Poisson distribution very closely, and the hospital was able to predict the workload accurately.

    **Submission Instructions:**

    – Submit your assignment by 11:59 pm on Sunday.
    – It should include at least 2 academic sources, formatted and cited in APA.

    – [\
    \
    IMG_0351.HEIC](https://www.sweetstudy.com/files/img-0351-heic "IMG_0351.HEIC")

    – 2 years ago

  • [Solved] Using the below dataset calculate in Excel; R2 and p-value to determine the power of association and if your calculations are statistically significant.

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    [>Statistics homework help](https://www.sweetstudy.com/fields/mathematics-statistics) Using the below dataset calculate in Excel; R2 and p-value to determine the power of association and if your calculations are statistically significant. V1 (Input Y Range) (Dependent Variable) V2 (Input X Range) (I…

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    Assignment Prompt & Instructions

    [>Statistics homework help](https://www.sweetstudy.com/fields/mathematics-statistics)

    Using the below dataset calculate in Excel; R2 and p-value to determine the power of association and if your calculations are statistically significant.

    V1 (Input Y Range) (Dependent Variable)

    V2 (Input X Range) (Independent Variable)

    12

    45

    15

    54

    17

    61

    13

    51

    18

    70

    20

    73

    22

    71

    18

    66

    25

    106

    _Hint:_ Excel Data Analysis; Regression.

    **Submission Instructions:**

    – Submit your assignment by 11:59 pm ET on Sunday.
    – It should include at least 2 academic sources, formatted and cited in APA.

    – [\
    \
    module7asig1biostat.HEIC](https://www.sweetstudy.com/files/module7asig1biostat-heic "module7asig1biostat.HEIC")

    – 2 years ago

  • [Solved] Using the accompanying dataset import it into SPSS and produced the following tables:

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    [>Statistics homework help](https://www.sweetstudy.com/fields/mathematics-statistics) **Instructions:** Using the accompanying dataset import it into SPSS and produced the following tables: Descriptives and the test for homogeneity of variance and the Tukey post hoc test. [Final project dataset](htt…

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    Assignment Prompt & Instructions

    [>Statistics homework help](https://www.sweetstudy.com/fields/mathematics-statistics)

    **Instructions:**

    Using the accompanying dataset import it into SPSS and produced the following tables:

    Descriptives and the test for homogeneity of variance and the Tukey post hoc test.

    [Final project dataset](https://agmu.instructure.com/courses/34986/files/8803022?wrap=1 "HESC_700_M8_Final Project Dataset.xls") [Download Final project dataset](https://agmu.instructure.com/courses/34986/files/8803022/download?download_frd=1)

    **Submission Instructions:**

    – Submit your assignment by 11:59 pm ET on Saturday.
    – Attach your SPSS readout.

    – [\
    \
    module8asigm1finalproyect.HEIC](https://www.sweetstudy.com/files/module8asigm1finalproyect-heic "module8asigm1finalproyect.HEIC")
    – [\
    \
    HESC_700_M8_FinalProjectDataset.xls](https://www.sweetstudy.com/files/hesc-700-m8-finalprojectdataset-xls "HESC_700_M8_FinalProjectDataset.xls")

    – 2 years ago

  • [Solved] The Mann-Whitney U Test is a nonparametric version

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    [>Statistics homework help](https://www.sweetstudy.com/fields/mathematics-statistics) The Mann-Whitney U Test is a nonparametric version of the independent samples t-test. The test primarily deals with two independent samples that contain ordinal data. The following example explained the comparison …

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    Assignment Prompt & Instructions

    [>Statistics homework help](https://www.sweetstudy.com/fields/mathematics-statistics)

    The Mann-Whitney U Test is a nonparametric version of the independent samples t-test. The test primarily deals with two independent samples that contain ordinal data. The following example explained the comparison between the nonparametric versus parametric tests.

    1. Select the best choice for the analysis and explain the reason.
    2. Review Module 4, if needed.
    3. Remember the importance of the p-value.

    **Results S.S. Bayesian Independent Samples T-Test**

    **Descriptive Statistics**

    **Independent Samples T-Test**

    **Independent Samples T-Test**

    **Test**

    **Statistic**

    **df**

    **p**

    WBC

    Student

    0.318

    137

    0.751

    Mann-Whitney

    2339.000

    0.750

    **Assumption Checks**

    **Test of Normality (Shapiro-Wilk)**

    **W**

    **p**

    WBC

    0

    0.394

    < .001

    1

    0.800

    < .001

    _Note._ Significant results suggest a deviation from normality.

    **Descriptives**

    **Group Descriptives**

    **Group**

    **N**

    **Mean**

    **SD**

    **SE**

    WBC

    0

    70

    8.539

    9.384

    1.122

    1

    69

    8.142

    4.405

    0.530

    _Hint:_ Visual determination.

    **Submission Instructions:**

    – Submit your assignment by 11:59 pm ET on Sunday.
    – It should include at least 3 academic sources, formatted and cited in APA.

    – [\
    \
    module7asigm2biosta.HEIC](https://www.sweetstudy.com/files/module7asigm2biosta-heic "module7asigm2biosta.HEIC")
    – [\
    \
    module7biostaasig2part2.HEIC](https://www.sweetstudy.com/files/module7biostaasig2part2-heic "module7biostaasig2part2.HEIC")

    – 2 years ago

  • [Solved] Read the information below to write a conclusion based on a 95% Confidence Interval for the following randomized trial.

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    [>Statistics homework help](https://www.sweetstudy.com/fields/mathematics-statistics) A randomized trial is designed to evaluate the effectiveness of a newly developed pain reliever designed to reduce pain in patients following joint replacement surgery. The trial compares the new pain reliever to t…

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    Assignment Prompt & Instructions

    [>Statistics homework help](https://www.sweetstudy.com/fields/mathematics-statistics)

    A randomized trial is designed to evaluate the effectiveness of a newly developed pain reliever designed to reduce pain in patients following joint replacement surgery. The trial compares the new pain reliever to the pain reliever currently in use (called the standard of care). A total of 100 patients undergoing joint replacement surgery agreed to participate in the trial. Patients were randomly assigned to receive either the new pain reliever or the standard pain reliever following surgery and were blind to the treatment assignment. Before receiving the assigned treatment, patients were asked to rate their pain on a scale of 0-10 with higher scores indicative of more pain. Each patient was then given the assigned treatment and after 30 minutes was again asked to rate their pain on the same scale. The primary outcome was a reduction in pain of 3 or more scale points (defined by clinicians as a clinically meaningful reduction). The following data were observed in the trial.

    **Treatment Group**

    **n**

    **Number with Reduction**

    **of 3+ Points**

    **Proportion with Reduction**

    **of 3+ Points**

    New Pain Reliever

    50

    23

    0.46

    Standard Pain Reliever

    50

    11

    0.22

    _Hint 1: Tests with Two Independent Samples, Dichotomous Outcome._

    _Hint 2: Remember the Confidence Interval z score table._

    – Contribute a minimum of (1) page listing the hypotheses, test statistic used, standard z score, and your conclusion based on your calculations.

    **Submission Instructions:**

    – Submit your assignment by 11:59 pm on Sunday.
    – It should include at least 2 academic sources, formatted and cited in APA.

    – [\
    \
    modue6biostaticsassigment1.heic](https://www.sweetstudy.com/files/modue6biostaticsassigment1-heic "modue6biostaticsassigment1.heic")

    – 2 years ago

  • [Solved] attached

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    [>Statistics homework help](https://www.sweetstudy.com/fields/mathematics-statistics) I have attached the work sheet and what we covered this week – **Knewton** – [**Week 3: Measures of Central Tendency**](https://chamberlain.instructure.com/courses/165616/modules/items/23690243 "Week 3: Measures of…

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    Assignment Prompt & Instructions

    [>Statistics homework help](https://www.sweetstudy.com/fields/mathematics-statistics)

    I have attached the work sheet and what we covered this week

    – **Knewton**
    – [**Week 3: Measures of Central Tendency**](https://chamberlain.instructure.com/courses/165616/modules/items/23690243 "Week 3: Measures of Central Tendency") Jan 2610 pts
    – [**Week 3: Understanding Measures of Central Tendency**](https://chamberlain.instructure.com/courses/165616/modules/items/23690255 "Week 3: Understanding Measures of Central Tendency") Jan 2610 pts
    – [**Week 3: Distribution Shape**](https://chamberlain.instructure.com/courses/165616/modules/items/23690269 "Week 3: Distribution Shape") Jan 2610 pts
    – [**Week 3: Standard Deviation**](https://chamberlain.instructure.com/courses/165616/modules/items/23690286 "Week 3: Standard Deviation") Jan 2610 pts
    – [**Week 3: Quartiles and Box Plots**](https://chamberlain.instructure.com/courses/165616/modules/items/23690296 "Week 3: Quartiles and Box Plots") Jan 2610 pts

    – [\
    \
    2024SEP_MATH225_W3_Lab_Assignment1.docx](https://www.sweetstudy.com/files/2024sep-math225-w3-lab-assignment1-docx "2024SEP_MATH225_W3_Lab_Assignment1.docx")

    – 2 years ago

  • [Solved] Math

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    [>Statistics homework help](https://www.sweetstudy.com/fields/mathematics-statistics) **Select** a research idea or problem you anticipate encountering in your current or future career that you could investigate using statistics. **Locate** a research article related to your selected research idea o…

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    Assignment Prompt & Instructions

    [>Statistics homework help](https://www.sweetstudy.com/fields/mathematics-statistics)

    **Select** a research idea or problem you anticipate encountering in your current or future career that you could investigate using statistics.

    **Locate** a research article related to your selected research idea or problem that used a test comparing two means. To locate your article, visit the [University Library](https://library.phoenix.edu/home) and access EBSCOhost in the Research Databases tab. Use the search term _t-test_ and terms related to your selected area of research to find a study.

    Tip: If you use the Advanced Search option in EBSCOhost, you can put _t-test_ in the first search box and keywords related to your area of interest (e.g., environmental toxicology) in the second search box. This will help show studies related to your area of interest.

    – 2 years ago