Question

Jamie is doing a survey at her school about whether the students feel the cafeteria food is satisfactory. She records the responses of 140 students and finds that 45% find the food satisfactory. She wonders whether she can claim this is significantly less than half.

Step 1 of 4:

Describe the sampling distribution.

Step 2 of 4:

Find and interpret the 94% confidence interval for the proportion of students who find the cafeteria food satisfactory.

Step 3 of 4:

What type of hypothesis test should be performed here?

Step 4 of 4:

Detail your testing process. Include all relevant information such as hypothesis, critical values, conclusions, and interpretations. Assume your significance level is 0.1.

Answer 1

40043 0.45 x 0.55 O.04 2 2- 603 0.45土1.81x0. 042 (0.371, 0.529) Skp 3 Step t 0. 0.042 Inapre kho, .← We ha써 enengh evidence to Conclude +41