Finding confidence interval using excel

Aug 23rd, 2016
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This is a sample question that shows how to find confidence interval using MicroSoft Excel

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A student randomly surveyed n = 36 other students and found that the mean amount of moneyspent on texts was x = $121.60. If the standard deviation of the population was = $6.36, findthe 90% confidence interval of the mean.SolutionUsing excel123ADATA0.10$6.3636FORMULA=CONFID

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