Test Statistics Assignment | Custom Assignment Help

FOR NEXT 3 QUESTIONS USE THE FOLLOWING DIRECTION:

Manager of a grocery store wants to test to determine whether or not the mean waiting time of its customers is significantly more than 4 minutes. He takes a random sample of 36 customers and finds that the average length of time it took the customers in the sample to check out was 4.6 minutes. A national study estimates that a standard deviation of length of time of grocery store customers is 1.8 minutes. What is the computed value of “test statistics” for this study?

• 1.96
• 1.64
• 2.00
• 0.0
• None of the above56

Question 39

2.5 pts

The P-value of this study is between 0.005 to 0.01

• 0.01
• 0.025
• 0.0228
• 0.9772

Question 40

2.5 pts

At 5% level of significance, it can be concluded that the mean of the population is

• significantly greater than 4
• not significantly greater than 4
• significantly less than 4
• significantly less than 4.6