Mathematics-Need in 5 hours

A study is designed to determine whether the recovery rate of a patient after

surgery could be improved by providing the patients with a newly developed drug

(Drug X). The 30 patients at a local hospital who agreed to participate in the study

were divided into two groups based on gender (18 men and 12 women). Half of

the men and half of the women (selected by random) received Drug X

immediately after the surgery, while the others did not. The doctor administering

the drug was the only person who knew which patients received Drug X. The

patients in the study and the nurses working with the patients on the hospital floor

were not told who received Drug X. The recovery rate for each patient was

determined by the number of hours after surgery it took before the patient was able

to walk around the hospital floor. The average recovery rates for men and women

who took Drug X and who did not were compared within their gender groups as

well as with each other.

Statistical Sampling Worksheet

Read the following study description.

Complete the following five activities, referring to the study description.

1. Identify all the quantitative and qualitative variables within the study. For each variable,

identify the level of measure.

2. Identify the sampling technique used in the study. Justify your response.

3. Explain how each of the following words are related to this study:

a. randomized block design,

b. double-blind experiment,

c. placebo effect

d. control group

e. treatment group

f. replication

4. Identify a lurking variable from the study. Explain why the variable you selected may have an

impact on the study’s results.

5. Describe the aspects of the study that are statistically sound and the aspects that are not

statistically sound.