A news report suggests that the mean response time for an ambulance in a suburban area is 7.7 minutes with a standard deviation of 1.1 minutes. The hospital buys a new ambulance and wants to see if having a new ambulance decreases the response times. A sample of 15 response times from the new ambulance is given below.

Data: 7.1 7.8 8.1 6.9 7.4 7.7 6.2 8.5 7.0 5.0 8.8 7.7 7.4 7.5 7.0

Blank #1: What type of test should be used in this instance? (Left-tailed Test, Right-tailed Test, Two-tailed test).

Blank #2: Which distribution should be used to test this data? (t-distribution, z-distribution, or chi-square)

Blank #3: Report the test statistic to two decimal places.

Blank #4: Report the p-value to four decimal places

Blank #5: Give the test decision: (reject or do not reject) H0

Blank #6: Evidence _______________(favors or does not favor) that the mean response time for the new ambulance is less than 7.7 minutes.

pur-new-sol

Related Questions