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Author Question: An educational organization in California is interested in estimating the mean number of minutes per ... (Read 26 times)

Kthamas

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on: Jun 24, 2018
An educational organization in California is interested in estimating the mean number of minutes per day that children between the age of 6 and 18 spend watching television per day.
 
  A previous study showed that the population standard deviation was 21.5 minutes. The organization selected a random sample of n = 200 children between the ages of 6 and 18 and recorded the number of minutes of TV that each person watched on a particular day. The mean time was 191.3 minutes. If the leaders of the organization wish to develop an interval estimate with 98 percent confidence, what critical value should be used?A) z = 1.645
  B) t = 2.38
  C) Approximately z = 2.33
  D) Can't be determined without knowing the margin of error.

Question 2

The sample mean is a parameter.
 
  Indicate whether the statement is true or false


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frankwu0507

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

C

Answer to Question 2

FALSE


Kthamas

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Reply 2 on: Jun 24, 2018
Excellent

tkempin

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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