b) The table below shows the color and the model of cars purchased by 160 randomlyselected customers at a car dealership in 2020.ModelHyundai19ColorТoyotaRed17White2535Black3529Use a 5 percent level of significance to test the null hypothesis that color chosen and car modelare independent.i.State the null and alternative hypotheses for this test.Calculate:ii.[2]the expected frequency for red vehicle and the Toyota modelb. the chis-square contribution, x², for red vehicle and the Toyota model[1][1]Given that the chi-square test statistic, x?, is 2.1183, find the p-value for test [2][2][2]i.ii.State the conclusion for the test.iii.State 2 limitations of the chi-square test, x.EEIJI

For the given data Perform Chi square test

Answered: b) The table below shows the color and…

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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Only c and d
Suppose we are interested in the relationship between individuals’ place of residence (rural versus urban) and their political affiliation (Republican versus Democrat). A random sample of 100 individuals yields the following crosstabulation: Political Affiliation Place of Residence Republican Democrat Rural 21 29 Urban 14 36 a) In words, what is the null hypothesis to be tested? b) Is the relationship between place of residence and political affiliation statistically significant at the .05 level? (Be sure to show the statistics that lead to your decision.) c) Compute and interpret an appropriate measure of association for the relationship between these two variables.
7 b. Identify the test statistic c. The P-value for this hypothesis test is
Suppose that in a random selection of 100 colored candies, 23% of them are blue. The candy company claims that the percentage of blue candies is equal to 26%. Use a 0.05 significance level to test that claim.
Suppose that in a random selection of 100 colored candies, 25% of them are blue. The candy company claims that the percentage of blue candies is equal to 22%. Use a 0.05 significance level to test that claim. O A. Ho p=0.22 Hy p>0.22 O B. Ho p=0.22 H p 0 22 O C. Ho pt0.22 H p=022 O D. Ho p=0.22 H1 p<0.22 Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is (Round to two decimal places as needed ) Identify the P-value for this hypothesis test. The P-value for this hypothesis test is | (Round to three decimal places as needed.) Identify the conclusion for this hypothesis test. O A. Fail to reject Ho. There is not sufficient evidence to warrant rejection of the claim that the percentage of blue candies is equal to 22% O B. Reject Hn. There is sufficient evidence to warrant rejection of the claim that the percentage of blue candies is equal to 22% OC. Fail to reject Ho. There is sufficient evidence to warrant rejection of the claim that the…
Suppose that in a random selection of 100 colored candies, 20% of them are blue. The candy company claims that the percentage of blue candies is equal to 29%. Use a 0.01 significance level to test that claim.
7) A department store manager has monitored the number of complaints received per week about poor service. The probabilities for numbers of complaints in a week, established by this review, are shown in the table. Number of complaints 0 1 2 3 4 5Probability 0.18 0.26 0.35 0.09 0.07 0.05 What is the variance of complaints received per week? Please round your answer to the nearest hundredth.
Motor Vehicle Fatalities The table below lists motor vehicle fatalities by day of the week for a recent year (based on data from the Insurance Institute for Highway Safety). Use a 0.01 significance level to test the claim that auto fatalities occur on the different days of the week with the same frequency. Provide an explanation for the results.
Is there an association between dominant hand (right or left) and pet preference (dog, cat, other, none) in college students? A local professor selects a random sample of 114 students from his college and categorizes them appropriately. He would like to determine if there is convincing evidence of an association. Let a = 0.05. What are the hypotheses for this test? Họ: There is no association between dominant hand (right or left) and pet preference (dog, cat, other, none) in college students. Hạ: There is an association between dominant hand (right or left) and pet preference (dog, cat, other, none) in college students. O Họ: There is an association between dominant hand (right or left) and pet preference (dog, cat, other, none) in college students. Hạ: There is no association between dominant hand (right or left) and pet preference (dog, cat, other, none) in college students. Họ: There is a difference in the distribution of dominant hand (right or left) and pet preference (dog, cat,…
Suppose that in a random selection of 100 colored candies, 20% of them are blue. The candy company claims that the percentage of blue candies is equal to 22%. Use a 0.01 significance level to test that claim.
The dataset "nurses" is a random sample of 1,000 cases from “Health Care Provider Credential Data” from Washington State Open Data Portal. In the sample, there are 418 CNA's and 278 of the CNA's have expired credentials. Use the statistics from the nurses dataset to answer the following question: "With 90% confidence, what percent of all CNA's on Washington State's healthcare provider list are expired?"

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