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Author Question: A company claims that the standard deviation in their delivery times is less than 5 days. A sample ... (Read 52 times)

jayhills49

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on: Jun 24, 2018
A company claims that the standard deviation in their delivery times is less than 5 days. A sample of 27 past customers was taken. The average delivery time in the sample was 14 days with a standard deviation of 4.5 days. At the 5 level of significance, test the company's claim. Use the critical value approach.

Question 2

Waiting line models describe the transient-period operating characteristics of a waiting line.
 a. True
  b. False
  Indicate whether the statement is true or false


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dominiqueenicolee

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Reply #1 on: Jun 24, 2018
Answer to Question 1

H0: 2  25
Ha: 2 < 25
chi-square = 21.06 > 15.379; do not reject H0

Answer to Question 2

FALSE


jayhills49

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Reply 2 on: Jun 24, 2018
Great answer, keep it coming :)

momolu

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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