At the 5% significance level, test the claim that the variance in wait times for a...

At the 5% significance level, test the claim that the variance in wait times for a call center is 100 square minutes. A simple random sample of 9 call center calls found that the mean wait time was 97.7 minutes with a standard deviation of 11.3 minutes. Assume the population is normally distributed.

Solutions

Expert Solution

given

s = 11.3

s2 = ( 11.3)2 = 127.69

Conclusion

It is concluded that the null hypothesis Ho is not rejected. Therefore, there is enough evidence to claim that

the variance in wait times for a call center is 100 square minutes. at the 0.05 significance level.

orchestra answered 1 year ago

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