Provided below are summary statistics for independent simple random samples from two populations. Use the pooled t-test and the pooled t-interval procedure to conduct the required hypothesis test and obtain the specified confidenceinterval.X1 = 22, s1 = 5, n = 19, x2 = 23, s2 = 4, n2 = 15a. Left-tailed test, a = 0.05b. 90% confidence interval.....a. What are the correct hypotheses for a left-tailed test?O A. Ho: H17 H2Ha: H1 = H2O B. Ho: H1 = H2Ha: H1 # H2O C. Ho: H1 H2Ha: H1 = H2O E. Ho: H1 = H2F. Ho: H1 = H2Ha: H1> H2Ha: H1

Answered: Provided below are summary statistics…

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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CorpPlus is a large corporation with many employees. You work for the human resources department of CorpPlus and want to estimate the population proportion of all employees who say the corporation is a great place to work. So, you will survey a random sample of 95 employees from CorpPlus and ask them whether they think the corporation is a great place to work. Follow the steps below to construct a 99% confidence interval for the population proportion of all employees who say the corporation is a great place to work. (If necessary, consult a list of formulas.) (a) Click on "Take Sample" to see the results from the random sample. Take Sample Sample size: 0 Point estimate: 0 Critical value: 0 Compute 0.000 Says the corporation is a great place to work Enter the values of the sample size, the point estimate of the population proportion, and the critical value you need for your 99% confidence interval. (Choose the correct critical value from the table of critical values provided.) When you…
please help me also find the p value and what the conclusion would be. Thank you!
Provided below are summary statistics for independent simple random samples from two populations. Use the pooled t-test and the pooled tinterval procedure to conduct the required hysothe * 12, s, =22, n, 19, 15, s, =24, ng = 19 a. Two-tailed test, a0.10 b. 90% confidence interval OA H 2 OB H OD H P2 OC H H2 OF H OE H H H Next, compute the test statistic (Round to three decimal places as needed.) Finally, determine the Pvalun P- (Round to four decimal s as needed) What is the conclusion of the hypothesis test? than a Since the Pvalue b. The ON oonfidence interval is from (Round to three decimal piaces as needed) Time A
Two groups were selected for an experiment. The sample data is reported: Group A Group B Sample Mean Spending/day ($) 170 150 Sample Standard deviation ($) 10 5 # of Females 9 7 Sample Size 36 42 a. Set up a 99% confidence interval for the mean difference in spending between the two groups. b. At the 10% level test the alternate hypothesis that group B has lower spending level than Group A.
Nina would like to estimate the difference in the mean amount of time students spend on math homework at her public school versus her cousin Sharon’s private school. To do so, each girl selects a random sample of 30 students from their large schools and asks the selected students how much time they spent doing math homework the previous night. Nina and Sharon would like to construct a 90% confidence interval for the true difference in the population means. Are the conditions for inference met? Yes, all three conditions for inference are met. No, the random condition is not met for both samples. No, the 10% condition is not met for both samples. No, the Normal/large sample condition is not met for both samples.
Provided below are summary statistics for independent simple random samples from two populations. Use the nonpooled t-test and the nonpooled t-interval procedure to conduct the required hypothesis test and obtain the specified confidence interval. x1=10, s1=2, n1=10, x2=14, s2=6, n2=10 a. Two-tailed test, α=0.05 b. 95% confidence interval a. What are the hypotheses for the t-test? A. H0: μ1=μ2 Ha: μ1≠μ2 B. H0: μ1≥μ2 Ha: μ1<μ2 C. H0: μ1=μ2 Ha: μ1>μ2 D. H0: μ1=μ2 Ha: μ1<μ2 Find the test statistic. t=_________ (Round to three decimal places as needed.) Find the critical values. ±tα/2=±___________ (Round to three decimal places as needed.) What is the conclusion of the hypothesis test? A. Do not reject H0. There is insufficient evidence that the two means are different. B. Reject H0. There is sufficient evidence that the two means are different. C. Reject H0. There is insufficient evidence that the…
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