2.3.17

Suppose that you are considering whether to publish a weekly alternative newspaper on campus. You decide to survey a random sample of students on your campus to ask if they would be likely to read such a newspaper. Your plan is to proceed with publication only if the sample data provide strong evidence that more than 10% of all students on your campus would be likely to read such a newspaper.

1) Identify the parameter of interest, in words.

a) The proportion of students in the sample that would likely read an alternative campus newspaper

b) The random sample of all students at the school surveyed

c) The proportion of all students that would likely read an alternative campus newspaper

2) Express the appropriate null and alternative hypothesis for conducting this test.

a) Ho: = 0.10 vs Ha: > 0.10

b) Ho: = 0.10 vs Ha: < 0.10

3) Specify what Type I error represents in this situation: Deciding the

a) The proportion of students who would read the paper is 10%, but we decide it is more than 10%

b) The proportion of students who would read the paper is more than 10%, but we don't find strong evidence that is more than 10%

c) The proportion of students who would read the paper is 10%, and we don't find strong evidence that it is more than 10%

d) The proportion of students who would read the paper is more than 10%, and we decide it is more than 10%

4) Specify what Type II error represents in this situation. Deciding the:

a) The proportion of students who would read the paper is more than 10%, but we don't find strong evidence that is more than 10%

b) The proportion of students who would read the paper is 10%, but we decide it is more than 10%

c) The proportion of students who would read the paper is 10%, and we don't find strong evidence that it is more than 10%

d) The proportion of students who would read the paper is more than 10%, and we decide it is more than 10%