Question

A frequency distribution for the response time for EMTs after a 911 call is shown below.

Response Time for EMTs

Response Time (in minutes)	Frequency fifi
6 – 6.9	21
7 – 7.9	22
8 – 8.9	35
9 – 9.9	43
10 – 10.9	47
11 – 11.9	31
12 – 12.9	18

Step 1 of 2 :  

Calculate the population mean for the response time. Round your answer to two decimal places, if necessary.

Step 2 of 2 :

Calculate the population variance for the response time. Round any intermediate calculations, if needed, to no less than four decimal places, and round your final answer to two decimal places.

Answer 1

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