A manager is interested in determining if the population standard deviation has dropped below 90. Based on a sample of n 23 items selected randomly from the population, conduct the appropriate hypothesis test at a 0.10 significance level. The sample standard deviation is 68. ..... Determine the null and alternative hypotheses. O A. Ho: o <90 HA o 2 90 O B. Ho: o = 90 HA o 90 O C. Ho o 28,100 HA o <8,100 O D. Ho o² <8,100 HA o 2 8,100 State the decision rule. Select the correct choice below and, if necessary, fill in any answer boxes to complete your choice. (Round to four decimal places as needed.) O A. If the test statistic, x> X = reject Ho. Otherwise, do not reject Ho. O B. If the test statistic, x2 = reject Ho or if the test statistic, x
A manager is interested in determining if the population standard deviation has dropped below 90. Based on a sample of n 23 items selected randomly from the population, conduct the appropriate hypothesis test at a 0.10 significance level. The sample standard deviation is 68. ..... Determine the null and alternative hypotheses. O A. Ho: o <90 HA o 2 90 O B. Ho: o = 90 HA o 90 O C. Ho o 28,100 HA o <8,100 O D. Ho o² <8,100 HA o 2 8,100 State the decision rule. Select the correct choice below and, if necessary, fill in any answer boxes to complete your choice. (Round to four decimal places as needed.) O A. If the test statistic, x> X = reject Ho. Otherwise, do not reject Ho. O B. If the test statistic, x2 = reject Ho or if the test statistic, x
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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Transcribed Image Text:A manager is interested in determining if the population standard deviation has dropped below 90. Based on a sample of
n= 23 items selected randomly from the population, conduct the appropriate hypothesis test at a 0.10 significance level.
The sample standard deviation is 68.
si
Determine the null and alternative hypotheses.
O A.
Ho
2 < 90
ad
> 90
O B. Ho: o = 90
HA o + 90
ex
O C. Ho: o 8,100
HA o <8,100
O D. H: o <8,100
HA o 2 8,100
ulf
State the decision rule. Select the correct choice below and, if necessary, fill in any answer boxes to complete your
choice.
sc
(Round to four decimal places as needed.)
O A.
If the test statistic, y > x? =
reject Ho. Otherwise, do not reject Ho.
%3D
ui
O B.
If the test statistic,Ý <x-«
reject Ho Otherwise, do not reject Ho
O C. If the test statistic, y>/2 =
reject Ho or if the test statistic, <x-/2=
not reject Ho
reject Ho. Otherwise, do
Transcribed Image Text:Find the test statistic, x
Y =
(Round to two decimal places as needed.)
lt
Choose the correct conclusion below.
sc
O A. Do not reject Ho. There is sufficient evidence that the population standard deviation is less than 90.
ui
B. Reject H. There is insufficient evidence that the population standard deviation is less than 90.
O C. Do not reject Ho. There is insufficient evidence that the population standard deviation is less than 90.
O D. Reject Ho. There is sufficient evidence that the population standard deviation is less than 90.
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