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www.helpyourmath.com is an OER website to help students to save inoney on textbooks and homework systems. A survey of 26 rand
www.helpyourmath.com is an OER website to help students to save inoney on textbooks and homework systems. A survey of 26 randomly selected students finds that they save a mean of \( \$ 85 \) per semester by using www.helpyourmath.com. Assume the date comes from a normal distribution and the sample standard deviation is \( \$ 12 \) per month. Confidence Interval: What is the \( 90 \% \) confidence interval to estimate the population mean? Round your answers to two decimal places. Question Help: D Video 1 D Video 2


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90% Confidence Interval for the Population Mean The confidence interval for the mean amount of saved money is obtained using the following formula, 90
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