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Author Question: The number of violent crimes committed in a day possesses a distribution with a mean of 2.2 crimes ... (Read 91 times)

go.lag

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on: Jul 24, 2018
The number of violent crimes committed in a day possesses a distribution with a mean of 2.2 crimes per day and a standard deviation of 6 crimes per day.
 
  A random sample of 100 days was observed, and the mean number of crimes for the sample was calculated. Describe the sampling distribution of the sample mean. A) approximately normal with mean = 2.2 and standard deviation = 0.6
  B) approximately normal with mean = 2.2 and standard deviation = 6
  C) shape unknown with mean = 2.2 and standard deviation = 6
  D) shape unknown with mean = 2.2 and standard deviation = 0.6

Question 2

Is a confidence interval or a prediction interval the wider interval at the same level of significance?
 
  A) Prediction Interval B) Confidence interval


miss_1456@hotmail.com

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

A

Answer to Question 2

A


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