Due to your successful advertising campaign you have been able to increase your pizza deliveries by 20%
Question:
a) Describe the sampling distribution of, the sample mean delivery time for a random sample of 120 deliveries. Is the sampling distribution normally distributed? Explain.
b) Calculate and for the sampling distribution of the sample mean when the sample size is 120.
c) What is the probability that the mean delivery time for a random sample of 120 deliveries is less than 30 minutes? Round 4 decimals.
d) What is the probability that a random sample of 120 deliveries has a mean delivery time greater than 30 minutes? Round 4 decimals.
e) Based on the information given and the calculations you did in part 1 and part 2 should you continue advertising that deliveries not made in 30 minutes or less are free? Explain using complete sentences.
Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...
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Related Book For
Managerial Accounting An Integrative Approach
ISBN: 9780999500491
2nd Edition
Authors: C J Mcnair Connoly, Kenneth Merchant
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