HLT 362V Module 3 Hypothesis Testing Week 3

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HLT 362V Module 3 Hypothesis Testing Week 3

HLT 362V Module 3 Hypothesis Testing  HLT362V

Problem 1

  1. There is a new drug that is used to treat leukemia. The following data represents the remission time in weeks for a random sample of 21 patients using the drug.

Problem 2

  1. We wish to test the claim that the mean body mass index (BMI) of men is equal to the mean BMI of women. Use the data to the right to test this claim.

HLT 362V Module 3 Exercise 31

HLT362V

  • What are the two groups whose results are reflected by the t ratios in Tables 2 and 3?
  • Which t ratio in Table 2 represents the greatest relative or standardized difference between the pretest and 3 months outcomes? Is this t ratio statistically significant? Provide a rationale for your answer.
  • Which t ratio listed in Table 3 represents the smallest relative difference between the pretest and 3 months? Is this t ratio statistically significant? What does this result mean?
  • What are the assumptions for conducting a t-test for dependent groups in a study? Which of these assumptions do you think were met by this study?
  • Compare the 3 months and 6 months t ratios for the variable Exercise from Table 3. What is your conclusion about the long-term effect of the health-promotion intervention on Exercise in this study?
  • What is the smallest, significant t ratio listed in Table 2? Provide a rationale for your answer.
  • Why are the larger t ratios more likely to be statistically significant?
  • Did the health-promotion program have a statistically significant effect on Systolic blood pressure (BP) in this study? Provide a rationale for your answer.
  • Examine the means and standard deviations for Systolic BP at pretest, 3 months (completion of the treatment), and 6 months. What do these results indicate? Are these results clinically important? Provide a rationale for your answer.
  • Is this study design strong or weak? Provide a rationale for your answer.
  • Would you, as a health care provider, implement this intervention at your facility based on the Total Risk Score results? Provide a rationale for your answer.

HLT 362V EXERCISE 18 Questions to be Graded

HLT362V

  1. In comparing men and women, which group had higher body image scores? Provide a rationale for your answer.
  2. Men had higher variability in weight change over the last 12 months when compared to women. Is this statement true or false? Provide a rationale for your answer.
  3. What are the X_and SD values for men’s body weight ratio?
  4. Assuming that the distribution of scores is normal, calculate the scores where 95% of values around the mean lie for women with weight change over the last 3 months. Round your answer to two decimal places.
  5. Assuming that the distribution of body weight ratio is a normal curve, 95% of the men lie between which two values of body weight ratio around the mean? Round your answer to two decimal places.
  6. Assuming that the distribution of womens’s body image scores is normal, 99% of women’s body image scores around the mean lie between what two values? Round your answer to two decimal places.
  7. Assuming that the distribution is a normal curve, 99% of men were between what ages? Round your answer to two decimal places.
  8. Assuming that the distribution is a normal curve, 95% of men were between what ages? Round your answer to two decimal places.
  9. Did HIV-positive participants have signifi cantly higher body image scores than those with AIDS? Provide a rationale for your response.
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