OAaあAsk Copilot+BExercise #3:ConsiderНA: μ < HoORHAH > Ho4of 7Compute the power levels of the following completed tests:Use the Standard Normal table since it gives better results than does our T table.a.)·S = 33·Effect size = 8α = 5%• n = 100b.)Same as above, but usingn = 50What happens to the power level when the sample size is decreased.c.)Same as in part a.) but using S = 60What happens to the power level when the variance is increased.d.)Same as in part a.) but using a = 10%What happens to the power level when the significance level is increased.Q SearchL

To compute the power levels for the completed tests, we need to first determine the critical values…

Answered: OA aあ Ask Copilot + B Exercise #3:…

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 test of H₁: μ=7 versus H₁: u<7 is performed using a significance level of a=0.01. The P-value is 0.20. Part: 0/3 Part 1 of 3 (a) Is H rejected? Since P ≤ Part: 1 / 3 Part 2 of 3 (b) If the true value of u is 1, is the result a Type I error, a Type II error, or a correct decision? a, we do not reject Ho at the a= 0.01 level. The result is a Type I error Part: 2/3 Part 3 of 3 X 3 (c) If the true value of u is 7, is the result a Type I error, a Type II error, or a correct decision? The result is a [Choose one) ▾ Español
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Show all work/steps! You must use JMP to analyze data.
Analyze data in SPSS using a dependent samples t-test • Imagine that we are interested in the difference in heart rate pre and post doing 30 seconds of jumping jacks. How might we test this question? (basic research design) Do the 4 steps of hypothesis testing (use the SPSS output sent): Step 1: • Write null hypothesis • Write research hypothesis Step 2:• Use a two-tailed test with alpha set to  = .05** • what is the critical region? Step 3: • what is the p-value? • what is the t-statistic? Step 4: • determine whether results are statistically significant • what do you conclude in general?
6) Describe the difference between a two-sample (independent) t-test and an ANOVA (in terms of what they compare) 3) [t (47) = -8.21, p = .003] Based on the parenthetical statement given above, what is the sample size for this study?
Is there a difference in pulse rates between male and female adults? In an experiment on a large group of first year university students, each student measured their pulse rates (at rest) on three different days. The average of the three pulse rates was then recorded for each student. Appropriate Excel output (using α = 0.01) is provided. a) Quantify the evidence for a significant difference in the mean pulse rate for males and females. Support your answer with an appropriate hypothesis test that draws on the Excel output provided at α = 0.01. State your conclusions clearly. b) Would the conclusions for this test be applicable to the general populations of male and females? Comment on any bias in the results that may have been introduced by using these samples. c) Calculate a 99% confidence interval for the mean difference in pulse rates for males and females based on this data
What is tcrit for a paired, two tailed t-test, with 15 individuals examined pre and post and α=0.05?
Before the furniture store began its ad campaign, it averaged 158 customers per day. The manager is investigating if the average is smaller since the ad came out. The data for the 11 randomly selected days since the ad campaign began is shown below: 147, 142, 149, 133, 146, 159, 132, 137, 148, 172, 150 Assuming that the distribution is normal, what can be concluded at the αα = 0.10 level of significance? For this study, we should use Select an answer z-test for a population proportion t-test for a population mean The null and alternative hypotheses would be: H0:H0: ? μ p Select an answer > ≠ < = H1:H1: ? p μ Select an answer < ≠ > = The test statistic ? z t = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.) The p-value is ? ≤ > αα Based on this, we should Select an answer accept fail to reject reject the null hypothesis. Thus, the final conclusion is that ... The data suggest…
a) What is Fcrit for a one way ANOVA with 5 treatments and 6 replicates per treatment at α=0.05? b)What is Fcrit for a one way ANOVA with 3 treatments and 5 replicates per treatment at α=0.01?
Before the furniture store began its ad campaign, it averaged 242 customers per day. The manager is investigating if the average is larger since the ad came out. The data for the 12 randomly selected days since the ad campaign began is shown below: 246, 261, 265, 253, 238, 267, 225, 272, 254, 259, 228, 255 Assuming that the distribution is normal, what can be concluded at the αα = 0.05 level of significance? For this study, we should use The null and alternative hypotheses would be: H0:H0: H1:H1: The test statistic = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.) The p-value is αα Based on this, we should the null hypothesis. Thus, the final conclusion is that ... The data suggest that the population mean number of customers since the ad campaign began is not significantly more than 242 at αα = 0.05, so there is insufficient evidence to conclude that the…

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