Suppose that a customer service center claims that the telephone calls it recieves last 113 seconds on average, with a standard

Question

3 years ago

15

Suppose that a customer service center claims that the telephone calls it recieves last 113 seconds on average, with a standard

deviation of 9 seconds. if you took a sample of 324 phone calls, which of the following mean times would be within the 95% confidence interval?
A. 116.5 seconds
B. 114.5 seconds
C. 113.5 seconds
D. 115.5 seconds

Mathematics

2 answers:

zimovet [89] · Answer 1 · 2022-04-16T16:45:47+03:00

zimovet [89]3 years ago

8 0

Answer: 113.5 sec

Step-by-step explanation:

Apex 2019

atroni [7] · Answer 2 · 2022-04-16T18:33:09+03:00

atroni [7]3 years ago

3 0

Answer:

113.5 seconds

Step-by-step explanation: