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# The Solution to Confidence Interval for Mean

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A sample of the math test scores of 35 fourth-graders has a mean of 82 with a standard deviation of 15.

Find the 95% confidence interval of the mean math test scores of all fourth-graders.

Find the 99% confidence interval of the mean math test scores of all fourth-graders.

Which interval is larger? Explain why.

##### Solution Summary

Step by step method for t construction confidence interval for mean is discussed here. Excel template for each problem is also included. This template can be used to obtain the answers of similar problems.

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A sample of the math test scores of 35 fourth-graders has a mean of 82 with a standard deviation of 15.
Find the 95% confidence interval of the mean math test scores of all fourth-graders.
Find the 99% confidence interval of the mean math test scores of all fourth-graders.
Which ...

##### Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.

##### Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.