OA. 0.15
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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hello, can you help me with the last two questions please?
![To test Hō: μ = 20 versus H₁: μ<20, a simple random sample of size n = 17 is obtained from a population that is known to be normally distributed. Answer parts (a)-(d).
Click here to view the t-Distribution Area in Right Tail.
(a) If x= 18.2 and s= 3.9, compute the test statistic.
t = -1.90 (Round to two decimal places as needed.)
(b) Draw a t-distribution with the area that represents the P-value shaded. Which of the following graphs shows the correct shaded region?
O A.
O B.
A
(c) Approximate the P-value. Choose the correct range for the P-value below.
O A. 0.15 < P-value <0.20
O B. 0.05<P-value < 0.10
OC. 0.025<P-value < 0.05
O D. 0.10 < P-value < 0.15
A
(d) If the researcher decides to test this hypothesis at the a= 0.05 level of significance, will the researcher reject the null hypothesis?
O A. The researcher will not reject the null hypothesis since the P-value is less than a.
O B. The researcher will reject the null hypothesis since the P-value is less than a
O C. The researcher will not reject the null hypothesis since the P-value is not less than .
O D. The researcher will reject the null hypothesis since the P-value is not less than a.
C
O C.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Faba41a1d-d1f3-4790-876b-aeeed0dbb2e9%2F6fe52a34-1ec5-4fa1-b9b1-f8e8ebb5264b%2Fg425ui_processed.png&w=3840&q=75)
Transcribed Image Text:To test Hō: μ = 20 versus H₁: μ<20, a simple random sample of size n = 17 is obtained from a population that is known to be normally distributed. Answer parts (a)-(d).
Click here to view the t-Distribution Area in Right Tail.
(a) If x= 18.2 and s= 3.9, compute the test statistic.
t = -1.90 (Round to two decimal places as needed.)
(b) Draw a t-distribution with the area that represents the P-value shaded. Which of the following graphs shows the correct shaded region?
O A.
O B.
A
(c) Approximate the P-value. Choose the correct range for the P-value below.
O A. 0.15 < P-value <0.20
O B. 0.05<P-value < 0.10
OC. 0.025<P-value < 0.05
O D. 0.10 < P-value < 0.15
A
(d) If the researcher decides to test this hypothesis at the a= 0.05 level of significance, will the researcher reject the null hypothesis?
O A. The researcher will not reject the null hypothesis since the P-value is less than a.
O B. The researcher will reject the null hypothesis since the P-value is less than a
O C. The researcher will not reject the null hypothesis since the P-value is not less than .
O D. The researcher will reject the null hypothesis since the P-value is not less than a.
C
O C.
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