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January 30, 2015

January 30, 2015

Posted by **Jared** on Sunday, June 20, 2010 at 1:30pm.

93 106 86 109 81 111 118 117 118 116

For these sample data, the mean is and the sample standard deviation is Using the given data as representative of the population of prices of all summer sleeping bags, find a 95% confidence interval for the mean price of all summer sleeping bags. Round your answer to two decimal places.

81.02 to 106.78

95.57 to 106.78

92.62 to 115.43

95.57 to 115.43

92.62 to 106.78

- Statistics -
**PsyDAG**, Monday, June 21, 2010 at 12:16pmYou need to calculate the mean and standard deviation first, or at least put it down in your post.

95% interval = mean ± 1.96 SD

Z = ±1.96 = (score - mean)/SD

Insert the values of mean and SD to find the score.

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