It appears that some people judge candidates for elected office by their faces. Psychologists showed head-and-shouldersphotos of the two main candidates in 32 races for the U.S. Senate to many subjects (dropping subjects who recognized one ofthe candidates) to see which candidate was rated "more competent" based on nothing but the photos. On election day, thecandidates whose faces looked more competent won 22 of the 32 contests. If faces do not influence voting, half of all races,inthe long run, should be won by the candidate with the better face. Is there evidence that the proportion of times the candidatewith the better face wins is more than 50%?What is the numerical value of the sample proportion p?(Use decimal notation. Give your answer to two decimal places.)p =II

According to the given information in this question We know that p^=xn where n = 32 and x = 22

Answered: photos of the two main candidates in 32…

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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find p value and its meaning please A survey of 1000 adults from a certain region asked, "If purchasing a used car made certain upgrades or features more affordable, what would be your preferred luxury upgrade?" The results indicated that 58% of the females and 51% of the males answered window tinting. The sample sizes of males and females were not provided. Suppose that of 600 females, 348 reported window tinting as their preferred luxury upgrade of choice, while of 400 males, 204 reported window tinting as their preferred luxury upgrade of choice. Complete parts (a) through (d) below. a. Is there evidence of a difference between males and females in the proportion who said they prefer window tinting as a luxury upgrade at the 0.05 level of significance? State the null and alternative hypotheses, where π1 is the population proportion of females who said they prefer window tinting as a luxury upgrade and π2 is the population proportion of males who said…
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Luonpea Reattempt this question dudnsanOus When you are done, click here to see a summary of your score Question with last attempt is displayed for your review only In a certain school district, it was observed that 34% of the students in the element schools were classified as only children (no siblings). However, in the special program for talented and gifted children, 118 out of 288 students are only children. The school district administrators want to know if the proportion of only children in the special program is significantly different from the proportion for the school district. Test at the o 0.01 level of significance What is the hypothesized population proportion for this test? 251 P = (Report answer as a decimal accurate to 2 decimal places. Do not report using the percent symbol) Based on the statement of this problem, how many tails would this hypothesis test have? one-tailed test two-tailed test Choose the correct pair of hypotheses for this situation: (B) (A) |(C) Ho:…
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