What is the appropriate critical value?01.961.714O 1.645O2.069State your decision given a test statistic of 4.77.O Reject HoO Fail to reject HoO Accept Ho70% ofThe correct conclusion is that we Select an answer conclude that Select an answerSelect an answer small business owners believe that hiring college graduates makes their workplacebetter.What level of concern do you have for the validity of your results?O Lowthe only assumption violated (ngo = 7.2) misses by a very small margin, so there is minorconcernO Noneall assumptions are met so there appears to be no problem with the conclusionO Extreme - we should not use any part of what we've done to make a conclusionO Moderatethe sample size is only 24, but that's likely close enough to 30 for our results to not becompletely dismissedO Either the low or moderate response is acceptable In a simple random sample of 24 small business owners, 20 said that hiring college graduates makes thellworkplace better. Test the hypothesis that more than 70% of small business owners believe that hiringcollege graduates makes their workplace better at the 0.05 level.What is the alternative hypothesis?Op ≥ 0.83Op ≥ 0.7Op > 0.7Op ≥ 0.7Op > 0.7Op > 0.83Op > 0.83Op≥ 0.83What is the appropriate critical value?01.96O 1.7141.645O2.069State your decision given a test statistic of 4.77.O Reject HoO Fail to reject HoO Accept HoThe correct conclusion is that we Select an answer conclude that Select an answer✓70% ofinorr ownors believe that hiring college graduates makes their workplace

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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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A statistics teacher taught a large introductory statistics class, with 500 students having enrolled over many years. The mean score over all those students on the first midterm was u = 88 with standard deviation o = 10. One year, the teacher taught a %3D much smaller class of only 25 students. The teacher wanted to know if teaching a smaller class was more effective and students performed better. We can consider the small class as an SRS of the students who took the large class over the years. The average midterm score was = 78. The hypothesis should be: a. Ho: H = 78 vs. Ha: H = 88. %3D O b. Ho: µ = 88 vs. Ha: µ 78 %3D Ο d. Ho: μ-88 νs. Ha: μ >88. %3D
Citrus Rental is a popular car rental agency that has a history of having too few cars available, so that its available cars are overdriven. The mean monthly mileage over the years for Citrus cars has been about 1500 miles per month. Recently, though, Citrus purchased thousands of new cars, and the company claims that the average mileage of its cars is now less than in the past. To test this, a random sample of 11 recent mileages of Citrus cars was taken. The mean of these 11 mileages was 1332 miles per month, and the standard deviation was 232 miles per month. Assume that the population of recent monthly mileages of Citrus cars is normally distributed. At the 0.05 level of significance, can it be concluded that the mean recent monthly mileage, u, of Citrus cars is less than 1500 miles per month? 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 table. (If necessary,…
A common idea is that people can temporarily postponed death to survive a major holiday or important event. A study found that there were 6907 deaths before Thanksgiving and 5739 deaths after Thanksgiving. Test the claim at the 0.05 significance level that the proportion of deaths in the week before Thanksgiving is less that 0.5. Based on your result, does it appear that peole can temporarily postpone death to survive the Thanksgiving holiday?
The University of Montana admission standards require students to have an ACT score of at least 22.We know that Montana ACT scores are normally distributed with a mean of 20.1 and standarddeviation of 4. If we ask a random sample of 100 students who took the ACT, how many would be expected toqualify for admission to UM?
In a previous poll, 39% of adults with children under the age of 18 reported that their family ate dinner together seven nights a week. Suppose that, in a more recent poll, 422 of 1145 adults with children under the age of 18 reported that their family ate dinner together seven nights a week. Is there sufficient evidence that the proportion of families with children under the age of 18 who eat dinner together seven nights a week has decreased? Use the x = 0.01 significance level. Because npo (1-Po) = 272.4 > 10 and the sample size is the hypothesis are satisfied. (Round to one decimal place as needed.) What are the null and alternative hypotheses? Ho: P = versus H₁: ▼ V (Type integers or decimals. Do not round.) Find the test statistic, Zo- C less than 5% of the population size, and the sample is given to be random, the requirements for testing Zo = (Round to two decimal places as needed.) Find the P-value. P-value = (Round to three decimal places as needed.) Is there sufficient…
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