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Consider the following hypothesis test: Ho: μ > 20 Ha: μ< 20 A sample of 40 provided a sample mean of 19.4. The population standard deviation is 2. a. Compute the value of the test statistic (to 2 decimals). Enter negative value as negative number. -1.90 b. What is the p-value (to 3 decimals)? c. Using a = 0.05, can it be concluded that the population mean is less than 20? Select your answer d. Using a = 0.05, what is the critical value for the test statistic (to 3 decimals)? Enter negative value as negative number. State the rejection rule: Reject Ho if z is-Select your answer - the critical value. Using a = 0.05, can it be concluded that the population mean is less than 20? - Select your answer-

Consider the following hypothesis test: Ho: μ > 20 Ha: μ< 20 A sample of 40 provided a sample mean of 19.4. The population standard deviation is 2. a. Compute the value of the test statistic (to 2 decimals). Enter negative value as negative number. -1.90 b. What is the p-value (to 3 decimals)? c. Using a = 0.05, can it be concluded that the population mean is less than 20? Select your answer d. Using a = 0.05, what is the critical value for the test statistic (to 3 decimals)? Enter negative value as negative number. State the rejection rule: Reject Ho if z is-Select your answer - the critical value. Using a = 0.05, can it be concluded that the population mean is less than 20? - Select your answer-

MATLAB: An Introduction with Applications
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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Consider the following hypothesis test: Ho: μ > 20 Ha: μ< 20 A sample of 40 provided a sample mean of 19.4. The population standard deviation is 2. a. Compute the value of the test statistic (to 2 decimals). Enter negative value as negative number. -1.90 b. What is the p-value (to 3 decimals)? c. Using a = 0.05, can it be concluded that the population mean is less than 20? Select your answer d. Using a = 0.05, what is the critical value for the test statistic (to 3 decimals)? Enter negative value as negative number. State the rejection rule: Reject Ho if z is-Select your answer - the critical value. Using a = 0.05, can it be concluded that the population mean is less than 20? - Select your answer -
Transcribed Image Text:Consider the following hypothesis test: Ho: μ > 20 Ha: μ< 20 A sample of 40 provided a sample mean of 19.4. The population standard deviation is 2. a. Compute the value of the test statistic (to 2 decimals). Enter negative value as negative number. -1.90 b. What is the p-value (to 3 decimals)? c. Using a = 0.05, can it be concluded that the population mean is less than 20? Select your answer d. Using a = 0.05, what is the critical value for the test statistic (to 3 decimals)? Enter negative value as negative number. State the rejection rule: Reject Ho if z is-Select your answer - the critical value. Using a = 0.05, can it be concluded that the population mean is less than 20? - Select your answer -
Solution q given Since - that Sample size (n) = 40 Sample mean (27) = (9.4 population standard deviation (0) = 2 known Test Statistic Z = = Z Ho: MZ 20 Ha : M < 20 the population standard deviation is so Z test and n730 2-M Decision = 2=0.05 CS Scanned with CamScanner we 5/5m -1.90 Using Excel pvalue- NORM DIST (-1.90, 0, 1, TRUE) 0.02871656 = 19.4 - २० २% J५० rounded off to pvalue the claim that less than 20. - = 0.029 -1.8973 2 decimal places sounded off 3 decimal place Но Since pvalue = 0.029 < < (0-05) refect Ho Conclusion → There is sufficient evidence to accept the population mean is to
Transcribed Image Text:Solution q given Since - that Sample size (n) = 40 Sample mean (27) = (9.4 population standard deviation (0) = 2 known Test Statistic Z = = Z Ho: MZ 20 Ha : M < 20 the population standard deviation is so Z test and n730 2-M Decision = 2=0.05 CS Scanned with CamScanner we 5/5m -1.90 Using Excel pvalue- NORM DIST (-1.90, 0, 1, TRUE) 0.02871656 = 19.4 - २० २% J५० rounded off to pvalue the claim that less than 20. - = 0.029 -1.8973 2 decimal places sounded off 3 decimal place Но Since pvalue = 0.029 < < (0-05) refect Ho Conclusion → There is sufficient evidence to accept the population mean is to
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