Q1Do students at your school study more, less, or about the same as at other business schools?Business Week reported that at the top 50 business schools, students studied an average of14.6 hours. Set up a hypothesis test to try to prove that the mean number of hours studied atyour school is different from the 14.6 hour benchmark reported by Business Week.a)State the null and alternative hypotheses.b)c)What is a Type I error for your test?What is a Type II error for your test?Q2ATMs must be stocked with enough cash to satisfy customers making withdrawals over anentire weekend. But if too much cash is unnecessarily kept in the ATMs, the bank is forgoingthe opportunity of investing the money and earning interest. Suppose that at a particularbranch the population mean amount of money withdrawn from ATMs per customertransaction over the weekend is $160 with a population standard deviation of $30.a)b)Q3If a random sample of 36 customer transactions is examined and the sample meanwithdrawal is $148, is there evidence to believe that the population average withdrawalis less than $160? (Use a 0.05 level of significance.)Compute the p-value and interpret its meaning.A manufacturer of chocolate candies uses machines to package candies as they move along afilling line. Although the packages are labeled as 8 ounces, the company wants the packagesto contain a mean of 8.17 ounces so that virtually none of the packages contain less than 8ounces. A sample of 50 packages is selected periodically, and the packaging process isstopped if there is evidence that the mean amount packaged is different from 8.17 ounces.Suppose that in a particular sample of 50 packages, the mean amount dispensed is 8.159ounces, with a sample standard deviation of 0.051 ounce.a)Is there evidence that the population mean amount is different from 8.17 ounces? (Use a0.05 level of significance.)

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Q1 Do students at your school study more, less, or about the same as at other business schools? Business Week reported that at the top 50 business schools, students studied an average of 14.6 hours. Set up a hypothesis test to try to prove that the mean number of hours studied at your school is different from the 14.6 hour benchmark reported by Business Week. a) State the null and alternative hypotheses. b) What is a Type I error for your test? c) What is a Type II error for your test?

Q1 Do students at your school study more, less, or about the same as at other business schools? Business Week reported that at the top 50 business schools, students studied an average of 14.6 hours. Set up a hypothesis test to try to prove that the mean number of hours studied at your school is different from the 14.6 hour benchmark reported by Business Week. a) State the null and alternative hypotheses. b) What is a Type I error for your test? c) What is a Type II error for your test?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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