Suppose that a report indicates that 28% of Canadian homeowners haveexperienced difficulty in making mortgage payments. Further suppose that a newsorganization randomly sampled 400 Canadian homeowners from 10 cities and foundthat 95 reported such difficulty. Does this indicate that the problem is less severeamong homeowners in these cities? Assuming that p represents the proportion ofhomeowners in these 10 cities that experience difficulty in making mortgagepayments, the correct null and alternative hypotheses to investigate this question is,Ho:p = 0.28 and HA :p> 0.28.O Ho:p = 0.28 and HA :P# 0.28.O Ho:p#0.28 and HA :p = 0.28.Ho:p = 0.28 and HA :p < 0.28.

Answered: Image /qna-images/answer/ea237e31-73cf-495e-8ea0-7b003a388ebd.jpg

Answered: Suppose that a report indicates that…

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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9. In a telephone survey of 800 registered voters, the data are cross classified both by gender of respondent and by respondent's opinion on an environmental bond issue. Men Women Bond issue For 450 160 Against 150 40 We want to know whether there is good evidence that one's gender influences whether a person is for or against the bond issue. Use the chi-square test to answer this question. State the hypotheses, discuss conditions, perform calculations, and report your conclusions.
5. An e-commerce research company claims that at least 55% of graduate students have bought merchandise on-line. A consumer group is suspicious of the claim and thinks that the proportion is lower than 55%. A random sample of 160 graduate students show that only 85 students have ever done so. Is there enough evidence to show that the true proportion is lower than 55%? Conduct the test at 0.1 level of significance.
The article "Freedom of What?" (Associated Press, February 1, 2005) described a study in which high school students and high school teachers were asked whether they agreed with the following statement: "Students should be allowed to report controversial issues in their student newspapers without the approval of school authorities." Researchers hypothesized that the long-run proportion of high school teachers who would agree with the statement would differ from the long-run proportion of high school students who would agree. Two random samples - 8,000 high school teachers and 10,000 high school students were selected from high schools in the U.S. It was reported that 39% of the teachers surveyed and 58% of the students surveyed agreed with the statement. A simulated null distribution of 1,000 differences in proportions created by using the Two Proportion applet is shown below. Total shuffles - 1000 251 Number of shuffles 20 Mean -0.000 SD-0.007 LUL 0.024 -0.026 -0,016 -0.006 0.004 0.014…
2. Below is data on the number of vehicles involved in a fatal crash and city in California during 2019. City Single-ve Two-vehicle hicle crash fatalities Los Angeles 175 San Diego 61 San Jose San Francisco Fresno 49 22 33 Sacramento 28 Long Beach 26 crash fatalities 69 19 19 a 13 2. Is there enough evidence to support that the number of vehicles involved in a crash is related to the city in which the accident occur? null and alternate hypotheses test statistic, critical value and/or p-value expected counts reject or fail to reject the null hypothesis ● conclusion in plain English
in a study done in michigan, it was determined 38 (out of 62) poor children who attended pre-school needed social services later in life compared to 49 (out of 61) poor chidren who did not attend pre-schol. Does this stdy prevoide significant evidence that pre-school reudces the need for social services later in life
1. Name your alternative and null hypotheses. b) Be sure and provide the mean for each group, standard error and significance levels. c) Write out a COMPETE statement as to and whether you accept or reject the null hypothesis. The federal government instituted a training program to help participants increase their monthly income. The Department’s inspector general wished to evaluate the program’s success or failure. Monthly income before the training program Monthly income after the training program 1363 1373 1482 1492 1579 1589 1643 1653 1752 1762 1848 1858 1927 1907 2055 2035 2143 2053 2237 2247 1752 1782 1752 1762 1643 1653 1848 1858 1752 1762
Past studies have indicated that the percentage of smokers was estimated to be about 34%. Given the new smoking cessation programs that have been implemented, you now believe that the percentage of smokers has reduced. You randomly surveyed 1807 people and found that 574 smoke. Use a 0.05 significance level to test the claim that the percentage of smokers has reduced. a) Identify the null and alternative hypotheses? Но: ? H1: ? v b) What type of hypothesis test should you conduct (left-, right-, or two-tailed)? O left-tailed O right-tailed O two-tailed c) Identify the appropriate significance level. d) Calculate your test statistic. Write the result below, and be sure to round your final answer to two decimal places. e) Calculate your p-value. Write the result below, and be sure to round your final answer to four decimal places. f) Do you reject the null hypothesis? O We reject the null hypothesis, since the p-value is less than the significance level. O We reject the null hypothesis,…
8. Please answer

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