(This is a multiple choice question with possibly more than 1 choices.) If, afte
ID: 2926157 • Letter: #
Question
(This is a multiple choice question with possibly more than 1 choices.)
If, after you obtain the 95% confidence interval, you find it to be too wide, which of the following remedial steps can you take to reduce the width of the confidence interval? Please choose best option more than one answer is possible.
To re-do the 95% confidence interval with only half of the sample data
To re-do the 95% confidence interval with more sample data
Provided that the population standard deviation has been increased.
Provided that the population standard deviation has been decreased
To construct a 99% confidence interval instead of a 95% one
To construct a 90% confidence interval instead of a 95% one
Explanation / Answer
The best choices will be:
To re-do the 95% confidence interval with more sample data
Provided that the population standard deviation has been decreased
To construct a 90% confidence interval instead of a 95% one
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