# BIOS 7000 A.T. Still University Bio Statistics Questions

In the M2-M8 Homework Problems and the M9 Data Analysis Project, analyze quantitative and qualitative data using biostatistics, informatics, computer-based programming and software, as appropriate. Use the

Download M6 Homework document

and the dataset (

Download Levine 2005

/

Morgan 2006

Download Morgan 2006

) to complete these homework problems. You will need to use SPSS to calculate your answers. Please submit your SPSS output and the answers to the homework problems.

Learning Objectives:1. Calculate answers to biostatistic problems, including one- and two-sided hypothesis testing, the relationship between confidence interval and p-values with two samples, null and alternative hypotheses, and two-sample z- and t- tests.2. Apply descriptive techniques commonly used to summarize public health data.3. Apply common statistical methods for inference.4. Interpret results of statistical analyses found in public health studies.5. Describe preferred methodological alternatives to commonly used statistical methods when assumptions are not met. BIOS7000: Biostatistics

M6 Homework

Name:____________________________

This module’s homework problems will cover the following topics:

One-Sample Hypothesis Testing

Two-Samples Hypothesis Testing

Directions: Complete the following homework problems:

Part 1: Review Questions from Chapters 12 and 13. (Please highlight your answers.)

12.2, 12.13, 12.16

13.7, 13.11, 13.18, 13.28, 13.31, 13.35

Part 2: Exercises from Chapter 12 and 13. (Please show all your work.)

12.20, 12.24 (Use Levine2005.sav and please include SPSS output here to receive credit. Separate SPSS

spv. files will not be considered for grading purposes.)

13.10 (Use Morgan2006.sav and please include SPSS output here to receive credit. Separate SPSS spv.

files will not be considered for grading purposes.)

Part 3: Exercises not found in the textbook.

Use dataset Week 2 dataset WK2HW_HOSPITAL.sav for the following questions. Yes, you need to

utilize the SPSS this week again but you should be very familiar with this data by now!

Let’s open the hospital data from Week 2 again. (Week 2 dataset WK2HW_HOSPITAL.sav). We want

to compare the mean of the hospital stay by sex at this particular Pennsylvania hospital. Let’s assume that

the data are normally distributed and we are assuming that the SD for sexes are equal. So, is there a

difference in the mean hospital stay in Pennsylvania hospital by gender? (Please include SPSS output

here to receive credit. Separate SPSS spv. files will not be considered for grading purposes.)

State the null and alternative hypotheses.

© 2023 – A.T. Still University – Last Updated: February 14, 2023

1

M6 Homework

BIOS:7000 Biostatistics

What is your test statistics and why? (no calculation needed)

What were your test statistics results? What is your conclusion?

Optional:

To practice paired t-test, use fluoride.sav and run the paired t-test (refer to pages 251 in

your textbook).

© 2023 – A.T. Still University – Last Updated: February 14, 2023

2

BIOS7000: Biostatistics

M6 Homework

Name:____________________________

This module’s homework problems will cover the following topics:

One-Sample Hypothesis Testing

Two-Samples Hypothesis Testing

Directions: Complete the following homework problems:

Part 1: Review Questions from Chapters 12 and 13. (Please highlight your answers.)

12.2, 12.13, 12.16

13.7, 13.11, 13.18, 13.28, 13.31, 13.35

Part 2: Exercises from Chapter 12 and 13. (Please show all your work.)

12.20, 12.24 (Use Levine2005.sav and please include SPSS output here to receive credit. Separate SPSS

spv. files will not be considered for grading purposes.)

13.10 (Use Morgan2006.sav and please include SPSS output here to receive credit. Separate SPSS spv.

files will not be considered for grading purposes.)

Part 3: Exercises not found in the textbook.

Use dataset Week 2 dataset WK2HW_HOSPITAL.sav for the following questions. Yes, you need to

utilize the SPSS this week again but you should be very familiar with this data by now!

Let’s open the hospital data from Week 2 again. (Week 2 dataset WK2HW_HOSPITAL.sav). We want

to compare the mean of the hospital stay by sex at this particular Pennsylvania hospital. Let’s assume that

the data are normally distributed and we are assuming that the SD for sexes are equal. So, is there a

difference in the mean hospital stay in Pennsylvania hospital by gender? (Please include SPSS output

here to receive credit. Separate SPSS spv. files will not be considered for grading purposes.)

State the null and alternative hypotheses.

© 2023 –A.T. Still University – Last Updated: February 14, 2023

1

M6 Homework

BIOS:7000 Biostatistics

What is your test statistics and why? (no calculation needed)

What were your test statistics results? What is your conclusion?

Optional:

To practice paired t-test, use fluoride.sav and run the paired t-test (refer to pages 251 in

your textbook).

© 2023 – A.T. Still University – Last Updated: February 14, 2023

2

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