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Author Question: After computing a confidence interval, the user believes the results are meaningless because the ... (Read 75 times)

elarge

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Question 1

A sample of 225 elements from a population with a standard deviation of 75 is selected. The sample mean is 180. The 95% confidence interval for μ is


105.0 to 225.0


175.0 to 185.0


100.0 to 200.0


170.2 to 189.8



Question 2

After computing a confidence interval, the user believes the results are meaningless because the width of the interval is too large. Which one of the following is the best recommendation?


Increase the level of confidence for the interval.


Decrease the sample size.


Increase the sample size.


Reduce the population variance.



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Marked as best answer by elarge on Mar 25, 2023

delmiss

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elarge

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Reply 2 on: Mar 25, 2023
Gracias!


bigcheese9

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Reply 3 on: Yesterday
Great answer, keep it coming :)

 

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