The test statistic of z = 2.22 is obtained when testing the claim that p ne0.492. a . Identify the hypothesis test as being two-tailed, left-tailed, or right- tailed b. Find the P-value. c . Using a significance level of alpha = 0.01 , should we reject H_{0} or should we fail to reject H_{0} ?
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The test statistic of z = 2.22 is obtained when testing the claim that p ne0.492. a . Identify the hypothesis test as being two-tailed, left-tailed, or right- tailed b. Find the P-value. c . Using a significance level of alpha = 0.01 , should we reject H_{0} or should we fail to reject H_{0} ?
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- One survey showed that among 935 randomly selected subjects who completed four years of college, 140 smoke and 795 do not smoke (based on data from the American Medical Association). For this sample p^= Answer correct to 4 decimal places. Using a 0.01 significance level to test the claim that the rate of smoking among those with four years of college is less than the 16% rate for the general population, answer the following:Use the dataset HT_4541.xls. Using Excel, conduct a t-test (at the alpha = 0.01 significance level) on whether the mean of X1 is equal to 100. What do you conclude from this sample data? Is the population mean equal to 100? Group of answer choices a-You reject the null hypothesis. You conclude that the population mean is equal to 100. b-You cannot reject the null hypothesis. You conclude that the population mean is equal to 100. c-You reject the null hypothesis. You conclude that the population mean is not equal to 100. d-You cannot reject the null hypothesis. You conclude that the population mean is not equal to 100. HT_4541.xls. X1 X2101.39 97.86101.81 105.11102.13 99.39100.15 99.40100.08 98.4595.72 99.6099.20 104.2897.23 105.00102.23 99.91100.24 106.61100.69 104.75100.05 108.7299.05 109.29101.36 101.61102.28 100.56100.38 104.06107.77 107.5099.91 104.93100.53 104.84103.41 99.12102.11…What is maximum weekly profit?
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- Use dataset "HT_4143.xls" and conduct a two-sample t-test using Excel. You'd like to test the null hypothesis that the means of the two samples (column A and column B) are the same. The alternative hypothesis is that they are not the same. You have no reason to believe that the standard deviations of the two samples are equal. Test at the alpha = 0.10 level. After using Excel, what do you conclude? Are the means the same? Group of answer choices You reject the null hypothesis. Therefore, you conclude that the means of the two populations are different. You reject the null hypothesis. Therefore, you conclude that the means of the two populations are the same. You cannot reject the null hypothesis. Therefore, you conclude that the means of the two populations are different. You cannot reject the null hypothesis. Therefore, you conclude that the means of the two populations are the same. HT_ 4143.xls: X1 X299.73 98.6995.93 98.9494.92 96.63100.52 99.16101.28…uttps://quizizz.com print/quiz605d266c466df4001b23c662 13. A two-sided t-test for a population mean is conducted of the null hypothesis Ho: u= 100. If a 90% t-interval constructed from the same sample data contains the value of 100, which of the following can be concluded about the test at a significance level of a = 0.10? U a) The p-value is greater than 0.10, and Ho U b) The p-value is less than 0.10 , and Ho should be rejected. should be rejected. U ) The p-value is less than 0.10, and Ho O d) The p-value is greater than 0.10, and H, should not be rejected. should not be rejected. O e) There is not enough information given to make a conclusion about the p-value and HnIt has long been stated that the mean temperature of humans is 98.6°F. However, two researchers currently involved in the subject thought that the mean temperature of humans is less than 98 6°F They measured the temperatures of 44 healthy adults 1 to 4 times daily for 3 days, obtaining 200 measurements The sample data resulted in a sample mean of 982°F and a sample standard deviation of 0.9°F Use the P-value approach to conduct a hypothesis test to judge whether the mean temperature of humans is less than 98.6°F at the a=0.01 level of significance State the hypotheses. Ho 98.6 F 98 6 F
- A researcher claims that the proportion of cars with manual transmission is less than 10%. To test this claim, a survey checked 1000 randomly selected cars. Of those cars, 95 had a manual transmission. The following is the setup for the hypothesis test: {H0: p=0.10 Ha: p<0.10 Find the test statistic for this hypothesis test for a proportion. Round your answer to 2 decimal places. Provide your answer below: Test_Statistic=. _______A research center claims that 31% of adults in a certain country would travel into space on a commercial flight if they could afford it. In a random sample of 700 adults in that country, 35% say that they would travel into space on a commercial flight if they could afford it. At α=0.10, is there enough evidence to reject the research center's claim? identify the standardized test statisticz= find the P valueP= decide whether to reject or fail to reject the null hypothesisThe test statistitcs z=1.85 is obtained when test the claim that P does not equal 0.135 a. Find the P value B. Using signifigance level of assumed standard 0.05 should we reject the null hypothesis or fail to reject the null hypothese