Suppose you perform the hypothesis test Ho: µ = 25 versus H1: µ < 25. The population variance, o², isknown. The sample size is n =50. Assume the significance level is 0.005.Part 1:1) Should you use z or t to find the critical value?OtPart 2 of 4Part 2:2) Choose the correct critical region.Reject Ho if z > zaReject Ho if z < - zgReject Ho if z > zaO Reject Ho if z < - zgReject Ho if z > zgReject Ho if z <Za or z > zaReject Ho if z > zaReject Ho if z <Za or z 2 ZaO Reject Ho if z <ZaReject Ho if z <- za or z > zsO Reject Ho if z <ZaReject Ho if z < – zg or z 2 za

Answered: 25 versus H1: µ < 25. The population…

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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Ho: µ 2 50 for our test. The sample size is 30 and the significance level is 0.04. If the test statistic is -2.04 is a Type I error possible? Explain. 5.
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0. A high school principal claims that the variance in the GPA of students in the graduating class is Tess than 0.39. You test this claim by sampling 31 seniors and find their GPA have a variance or 0.21. Ho:o? Ha:o2 < 0.39 (Claim) = 0.39 Is there enough evidence to reject Ho and support the principal's claim at a 0.10 level of significance? ohs A. No, the test statistic x? B. No, the test statistic x2 = 16.154 is not in the rejection region with critical value 40.256 C. Yes, the test statistic x? D. No, the test statistic x2 = 21.434 is not in the rejection region with critical value 20.599 E. Yes, the test statistic x? = 16.154 is in the rejection region with critical value 20.599 = 20.599 is not in the rejection region with critical value 21.434 %3D 20.599 is in the rejection region with critical value 16.154 %D
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(see attachment) Use technology to conduct a one-factor ANOVA to determine if the group means are equal using α=0.05α=0.05. Group means (report to 2 decimal places): Group 1: Internship: Group 2: Co-op: Group 3: Work Study: ANOVA summary statistics:F-ratio = (report accurate to 3 decimal places)p=p= (report accurate to 4 decimal places)
Use technology to help you test the claim about the population mean, µ, at the given level of significance, a, using the given sample statistics. Assume the population i normally distributed. Claim: µs 1260; a = 0.07; 6 = 206.13. Sample statistics: x= 1282.49, n= 275 Identify the null and alternative hypotheses. Choose the correct answer below. Ο Β. Ho : με 1282.49 Ο Α. Ho μ> 1282.49 H3: us 1282.49 H3: u> 1282.49 O C. H : μ2 1282.49 O D. Hp: µs 1260 Ha:u 1260 Ο Ε. Hρ: μ2 1260 OF. Ho: µ> 1260 Ha: µ< 1260 H3: us 1260 Calculate the standardized test statistic. The standardized test statistic is. (Round to two decimal places as needed.) Determine the P-value. P= (Round to three decimal places as needed )
17. Question content area top Part 1 Use a t-test to test the claim about the population mean μ at the given level of significance α using the given sample statistics. Assume the population is normally distributed. Claim: μ=52,400; α=0.10 Sample statistics: x=53,647, s=3000, n=20 LOADING... Click the icon to view the t-distribution table. Question content area bottom Part 1 What are the null and alternative hypotheses? Choose the correct answer below. A. H0: μ≠52,400 Ha: μ=52,400 B. H0: μ≥52,400 Ha: μ<52,400 C. H0: μ=52,400 Ha: μ≠52,400 D. H0: μ≤52,400 Ha: μ>52,400 Part 2 What is the value of the standardized test statistic? The standardized test statistic is enter your response here . (Round to two decimal places as needed.) Part 3 What is(are) the critical value(s)? The critical value(s) is(are) enter your response here . (Round to three decimal places as needed. Use…

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