Apoliticalanalystbelievesthata recent to support a in asenator'sdecisionbillresulteddropofapprovalratings.Totestthisclaim, he selects random cities in the state that voted the senator in and compares the approval ratings before the decisionto the approval ratings after the decision. Suppose that data were collected for a random sample of 8 cities, where eachdifference is calculated by subtracting the percent approval rating before the decision from the percent approval rating afterthe decision. Assume that the percentages are normally distributed. What type of test is this hypothesis test?Select the correct answer below:O This is a left-tailed test because the alternative hypothesis is H,: Mu 0.O This is a left-tailed test because the alternative hypothesis is H Ha>0.O This is a two-tailed test because the alternative hypothesis is Ha: H o.This is a right-tailed test because the alternative hypothesis is Ha : Ha > 0O This is a right-tailed test because the alternative hypothesis is H: Hu <0.

Here, the claim is, senator’s recent decision to support a bill resulted in a drop of approval…

Answered: A political analyst believes that 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 Consumer Reports Restaurant Customer Satisfaction Survey is based upon 148,599 visits to full-service restaurant chains (Consumer Reports website). One of the variables in the study is meal price, the average amount paid per person for dinner and drinks, minus the tip. Suppose a reporter for the Sun Coast Times thought that it would be of interest to her readers to conduct a similar study for restaurants located on the Grand Strand section in Myrtle Beach, South Carolina. The reporter selected a sample of 8 seafood restaurants, 8 Italian restaurants, and 8 steakhouses. The following data show the meal prices ($) obtained for the 24 restaurants sampled. Use a = 0.05 to test whether there is a significant difference among the mean meal price for the three types of restaurants. Source Sum of Squares Degrees Mean Square F P-value of Variation (to whole number) of Freedom (to 2 decimals) (to 2 decimals) (to 4 decimals) X X (X) * X * * Treatments Error Total The p-value is less than 0.01…
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In the twentieth century, it was a common practice in Southern California for houses to be built with pools in the backyard. For new homes, however, that practice may be changing, possibly as a measure to help reduce climate change. A recent study examined a random sample of 140 houses built in Southern California in the twentieth century and an independent, random sample of 81 new houses built in Southern California. The sample of twentieth century houses contained 61 houses with pools, and the sample of new houses contained 24 houses with pools.Based on this survey, can we conclude, at the 0.05 level of significance, that the proportion p1 of all Southern California twentieth century houses that were built with pools is greater than the proportion p2of all new Southern California houses that were built with pools?Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places and round your answers as specified in the…
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