Solved: Confidence intervals for the true length of calls, Basic Statistics

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Confidence intervals for the true length of calls

Sentinal Phoneback answers customer enquiries with telephone calls. When they timed a sample of 40 calls, they found a mean duration of 14.9 minutes and a standard deviation in duration of 2 minutes. What are the 95% and 99% confidence intervals for the true length of calls?

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Basic Statistics: Confidence intervals for the true length of calls

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Solution Preview :

Prepared by a verified Expert

Basic Statistics: Confidence intervals for the true length of calls

Reference No:- TGS0689332

Have a Question? (oR Write a Review)

Recent Questions Asked Basic Statistics

Q : How the variable cost per unit remains constant

Q : How many patient days does the hospital

Q : Probability distribution for the number of successes

Q : Week 2

Q : Confidence intervals for the true length of calls

Q : What is the breakeven in units and dollars

Q : What is capital investment analysis

Q : Explain what qualitative factors should avery consider

Q : How standards would help that business control

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Solution Preview :

Prepared by a verified Expert

Basic Statistics: Confidence intervals for the true length of calls

Reference No:- TGS0689332

Recent Questions Asked Basic Statistics

Q : How the variable cost per unit remains constant

Q : How many patient days does the hospital

Q : Probability distribution for the number of successes

Q : Week 2

Q : Confidence intervals for the true length of calls

Q : What is the breakeven in units and dollars

Q : What is capital investment analysis

Q : Explain what qualitative factors should avery consider

Q : How standards would help that business control

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