A consumer advocacy group is doing a large study on car rental practices. Among other things, the consumer group would like to do a statistical test regardingthe mean monthly mileage, μ, of cars rented in the U.S. this year. The consumer group has good reason to believe that the mean monthly mileage of carsrented in the U.S. this year is different from last year's mean, which was 2800 miles.The group' plans to do a statistical test regarding the value of μ. It chooses a random sample of monthly mileages and computes the mean of the sample to be2665 miles and the standard deviation to be 800 miles.Based on this information, complete the parts below.(a) what are the null hypothesis Ho and the alternative hypothesis H₁ that should be used for the test?0Ho :OH₁ :0(b) Suppose that the group decides not to reject the null hypothesis. What sort of error might it be making?(Choose one)(c) Suppose the true mean monthly mileage of cars rented in the U.S. this year is 2650. Fill in the blanks to describe aType II error.A Type II error would be (Choose one)(Choose one) when, in fact, u is (Choose one)XWthe hypothesis that u is (Choose one)U²0XOSO0=0Ś☐>O

Answered: A consumer advocacy group is doing a…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The Food and Drug Administration (FDA) is a U.S. government agency that regulates (you guessed it) food and drugs for consumer safety. One thing the FDA regulates is the allowable insect parts in various foods. You may be surprised to know that much of the processed food we eat contains insect parts. An example is flour. When wheat is ground into flour, insects that were in the wheat are ground up as well. The mean number of insect parts allowed in 100 grams (about 3 ounces) of wheat flour is 75. If the FDA finds more than this number, they conduct further tests to determine if the flour is too contaminated by insect parts to be fit for human consumption. The population standard deviation is 10. The FDA cannot afford to sample the entire shipment so they take a random sample of 37 bags of flour for evaluation and finds that they contain an average of 79 insect parts per 100 grams. Test to see if the entire shipment of wheat is not fit for human consumption. Test the claim using a 5%…

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