Before the furniture store began its ad campaign, it averaged 172 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: 158, 172, 183, 190, 176, 188, 197, 194, 162, 194, 174, 154 Assuming that the distribution is normal, what can be concluded at the a = 0.05 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ? v Select an answer ♥ H1: ? v Select an answer v c. The test statistic ? v = (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is ? va f. Based on this, we should Select an answer v the null hypothesis. g. Thus, the final conclusion is that ... O The data suggest the population mean is not significantly more than 172 at a = 0.05, so there is sufficient evidence to conclude that the population mean number of customers since the ad campaign began is equal to 172. The data suggest that the population mean number of customers since the ad campaign began is not significantly more than 172 at a = 0.05, so there is insufficient evidence to conclude that the population mean number of customers since the ad campaign began is more than 172 %3D The data suggest the populaton mean is significantly more than 172 at a = 0.05, so there is sufficient evidence to conclude that the population mean number of customers since the ad campaign began is more than 172.
Before the furniture store began its ad campaign, it averaged 172 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: 158, 172, 183, 190, 176, 188, 197, 194, 162, 194, 174, 154 Assuming that the distribution is normal, what can be concluded at the a = 0.05 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ? v Select an answer ♥ H1: ? v Select an answer v c. The test statistic ? v = (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is ? va f. Based on this, we should Select an answer v the null hypothesis. g. Thus, the final conclusion is that ... O The data suggest the population mean is not significantly more than 172 at a = 0.05, so there is sufficient evidence to conclude that the population mean number of customers since the ad campaign began is equal to 172. The data suggest that the population mean number of customers since the ad campaign began is not significantly more than 172 at a = 0.05, so there is insufficient evidence to conclude that the population mean number of customers since the ad campaign began is more than 172 %3D The data suggest the populaton mean is significantly more than 172 at a = 0.05, so there is sufficient evidence to conclude that the population mean number of customers since the ad campaign began is more than 172.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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Transcribed Image Text:h. Interpret the p-value in the context of the study.
O If the population mean number of customers since the ad campaign began is 172 and if you
collect data for another 12 days since the ad campaign began then there would be a
7.88729881% chance that the sample mean for these 12 days would be greater than 178.5.
O If the population mean number of customers since the ad campaign began is 172 and if you
collect data for another 12 days since the ad campaign began then there would be a
7.88729881% chance that the population mean number of customers since the ad campaign
began would be greater than 172.
There is a 7.88729881% chance of a Type I error.
There is a 7.88729881% chance that the population mean number of customers since the ad
campaign began is greater than 172.
i. Interpret the level of significance in the context of the study.
O If the population mean number of customers since the ad campaign began is more than 172
and if you collect data for another 12 days since the ad campaign began, then there would be
a 5% chance that we would end up falsely concuding that the population mean number of
customers since the ad campaign is equal to 172.
O If the population mean number of customers since the ad campaign began is 172 and if you
collect data for another 12 days since the ad campaign began, then there would be a 5%
chance that we would end up falsely concuding that the population mean number of customers
since the ad campaign began is more than 172.
O There is a 5% chance that the population mean number of customers since the ad campaign
began is more than 172.
O There is a 5% chance that there will be no customers since everyone shops online nowadays.

Transcribed Image Text:Before the furniture store began its ad campaign, it averaged 172 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:
158, 172, 183, 190, 176, 188, 197, 194, 162, 194, 174, 154
Assuming that the distribution is normal, what can be concluded at the a =
0.05 level of significance?
a. For this study, we should use Select an answer
b. The null and alternative hypotheses would be:
Но:
? v Select an answer v
H1:
? v Select an answer ♥
c. The test statistic ? v =
(please show your answer to 3 decimal places.)
d. The p-value
(Please show your answer to 4 decimal places.)
e. The p-value is ? va
f. Based on this, we should Select an answer v the null hypothesis.
g. Thus, the final conclusion is that ...
The data suggest the population mean is not significantly more than 172 at a = 0.05, so there
is sufficient evidence to conclude that the population mean number of customers since the ad
campaign began is equal to 172.
O The data suggest that the population mean number of customers since the ad campaign began
is not significantly more than 172 at a = 0.05, so there is insufficient evidence to conclude
that the population mean number of customers since the ad campaign began is more than 172.
%3D
O The data suggest the populaton mean is significantly more than 172 at a = 0.05, so there is
sufficient evidence to conclude that the population mean number of customers since the ad
campaign began is more than 172.
%3D
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