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Author Question: Based on a random sample of 41 flights, the average minutes of airborne time for an airline was 106 ... (Read 197 times)

tsand2

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on: Jul 24, 2018
Based on a random sample of 41 flights, the average minutes of airborne time for an airline was 106 minutes, with a standard deviation of 5 minutes. Would a 95 confidence interval for the average airborne time for this airline be wider or narrower than the 90 confidence interval?

Question 2

In each situation, indicate whether the value given in bold print is a statistic or a parameter. A 2009 US study found the average age of formal autism diagnosis was 5.7 years, far above the recommended age of 30 months, and that 27 of children remained undiagnosed at age 8 years.
 a. Statistic
  b. Parameter


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fwbard

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

It would be wider.

Answer to Question 2

A


tsand2

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Reply #2 on: Jul 24, 2018
Thank you!


fwbard

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Reply #3 on: Jul 24, 2018
Always glad to help...


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