After Constructing a Confidence Interval Estimate for a Population Mean,you

question 70

Multiple Choice

After constructing a confidence interval estimate for a population mean,you believe that the interval is useless because it is too wide.In order to correct this problem,you need to:

• A)increase the sample size.
• B)increase the population standard deviation.
• C)increase the level of confidence.
• D)increase the sample mean.

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