8.22 Consider the test of Ho: μ = 7. For each of the following, find the p-value of the test: a. Ha >7, z = 1.20 < b. Ha 7, z = -1.20 c. Ha μ7, z = 1.20
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- calculate the standard score of the given x value x=36.5 where u= 36.5 and a=36.7is the correct answer to this C? if not, pls show ur work to get to the right answer. this is a non graded practice.A population has u = 50.Whixh value of o would make x=55 a central,representative score in the population distribution? o=1 o=6 o=2 impossible
- Two universities give samples of students the same exam. School A records the follwoing sample statistics: ā1=73, 8,=5.5, ni =80. School B records the follwoing sample statistics: z=69, ,=4.4, n2 =90. We wish to build a 95 % cofidence interval to estimate the difference in means between these schools. Define your variable: O Let p be the proprotion School A students that were higher than School B. Let u the mean test score that School A was higher than School B. Let u be the mean test score. O Let u be the mean test score at School A. Create and interpret a 95% Confidence Interval. Round your answers to one decimal place. Select an answer and Select an answer What is the margin of error? Round your answer to one decimal place. Do these results suggest that School A might have higher means on this test? ? Do these results PROVE that School A might have higher means on this test? The campus president at School A made the following statement. "Our students score an average of 5 points…Each car in a random sample of 170 cars sold in 2010 at a large car dealership was classified by color. Sixty of the cars were white, 80 were blue, 20 were silver and 10 were red. What is the value of the chi-square test statistic in a test of Ho: Pw=Pb=Ps=Pr=0.25 A. 18 B. 32 C. 56 D. 77 E. 110Find the standardized test statistic t for a sample with n= 15, x= 10.2, s 0.8, and a= 0.05 if H: H 2 9.9. Round your answer to three decimal places. A. 1.728 B. 1.452 C. 1.631 D. 1.312 Click to select your answer. P Type here to search a +66 hp 2) 立
- Claim: The mean pulse rate (in beats per minute) of adult males is equal to 69 bpm. For a random sample of 171 adult males, value of the test statistic. The value of the test statistic is (Round to two decimal places as needed.). KFind the standardized test statistic t for a sample with n= 12, x= 24.3, s 2.1, and a= 0.01 if H,:µ# 24.8. Round your answer to three decimal places. O A. - 0.825 B. -0.037 C. -0.008 D. -0.381 Click to select your answer. P Type here to search 99+ a hp 立Find the standardized test statistic t for a sample with n= 12, x = 11.2, s 2.2, and a= 0.01 if Ho: = 10. Round your answer to three decimal places. A. 1.991 B. 2.001 C. 1.890 D. 2.132 ting Click to select your answer. a P Type here to search hp 立
- After conducting a re-test for independent samples, you arrived at the following:t(47) = 3.41, p<.05. The degrees of freedom is indicated by which of the following? A. 47 B. 3.41 C. <.05 D. P E. TA poll classified respondents by gender and political party, as shown in the table. A researcher wonders if gender and party affiliation are not independent. (Assume a significance level of α = 0.05) Complete parts a) through e) below. d) Find the P-value for this test. Calculate the chi-square statistic. x² = 2.339 (Round to three decimal places as needed.) Find the P-value for the test. Choose the correct answer below. 0.0823 0.3104 0.003 DRIO 40 40 25 Male Female 49 35 18 e) State an appropriate conclusion. Choose the correct answer below. O A. Fail to reject the null hypothesis. There is sufficient evidence to support the claim. B. Reject the null hypothesis. There is not sufficient evidence to support the claim. C. Reject the null hypothesis. There is sufficient evidence to support the claim. O D. Fail to reject the null hypothesis. There is not sufficient evidence to support the claim.In a survey of 399 randomly selected households conducted in the U.S., it was found that 158 of the households had at least one pet. What is the best point estimate of the proportion of households that have at least one pet? ABC T T TArial 3 (12pt) 只i y
