Question

In 1990, the average student at a large university in the south smokes 8.3 cigarettes per day. Due to recent efforts and policy implementations related to smoking, a director of the student health center wishes to determine whether the incidence of cigarette smoking has decreased. She selects 30 students randomly and found a mean of 7.6 with a standard deviation of 1. Use the .10 level of significance to answer the research question.

7. What are the assumptions associated with making inferences back to the population?

a. scores (or subjects) are normally distributed in the sample; scores (or subjects) are independent of each other

b. scores (or subjects) are normally distributed in the sample; scores (or subjects) are dependent

c. scores (or subjects) are normally distributed in the population: scores (or subjects) are independent of each other

d. scores (or subjects) are normally distributed in the sample; scores (or subjects) are dependent

Answer 1

Option - c