Suppose that a customer service center claims that the telephone calls it receives last 112 seconds on average, with a standard deviation of 9 second. If you took a sample of 324 telephone calls, which of the following mean times would be within the 95% confidence interval

Question

Pranav Norton

5 December, 05:40

+2

Answers (2)

Know the Answer?

Sincere May · Answer 1

For those on apex where the question says 113 instead of the above 112, the answer is 113.5 seconds. : - )

Amaris Pacheco · Answer 2

Amaris Pacheco 5 December, 07:41

0

112.5 seconds is the answer