38. Parking lots A survey of autos parked in student and staff lotsat a large university classified the brands by country of origin,as seen in the table.OriginAmericanEuropeanAsianDriverStudent1073355Staff1051247a) What percent of all the cars surveyed were foreign?b) What percent of the American cars were owned by students?c) What percent of the students owned American cars?d) What is the marginal distribution of origin?e) What are the conditional distributions of origin by driverclassification?f) Do you think that the origin of the car is independent of thetype of driver? Explain.

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Answered: 38. Parking lots A survey of autos…

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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Social media is becoming more and more popular around the world. Suppose a website provides estimates of the number of social media users in various countries. Assume that the results for surveys in the United Kingdom, China, Russia, and the United States are as follows. Use Social Media Yes No United Kingdom 480 320 Country China Russia 235 265 343 Need Help? 357 O Ho: All population proportions are not equal. H₂: P₁ = P₂ = P3 = P4 Read It OHO: Not all population proportions are equal. Ha: P₁ = P₂ = P3 = P4 (a) Conduct a hypothesis test to determine whether the proportion of adults using social media is equal for all four countries. State the null and alternative hypotheses. O Ho: P₁ = P₂ = P3 = P4 H₂: Not all population proportions are equal. United States 620 380 Ho: P₁ = P₂ = P3 = P4 H: All population proportions are not equal. Find the value of the test statistic. (Round your answer to two decimal places.) What is the p-value? (Round your answer to four decimal places.) p-value =…
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