MailaM504672 MailaM504672

25-10-2022
Mathematics

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Video: t-test example.www.helpyourmath.com is an OER website to help students to save money on textbooks and homeworksystems. A survey of 22 randomly selected students finds that they save a mean of $195 per semester busing www.helpyourmath.com. Assume the date comes from a normal distribution and the samplestandard deviation is $10 per month.Confidence Interval: What is the 90% confidence interval to estimate the population mean? Round youanswers to two decimal places.191.50x

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