8. Atechnology committee wants to perform a test to see if the mean amount of time students are spending in a lab has increased from 51 minutes. Here are the data from a random sample of 12 students. a) Plot the data. Are any of the observations outliers? Explain. b) What do you conclude about the claim? If there are outliers, perform the test with and without the outliers present. a) Choose the correct histogram of the data below. ○ A. 160 Time (min.) ○ B. 160 Time (min.) ○ C. D. 160 Time (min.) Time (min.) 53 57 55 76 62 52 FRIENDS 73 54 137 160 Time (min.) Are there any outliers? Select the correct choice below and fill in any answer boxes within your choice. O A. There are no outliers. All of the points are grouped together in the histogram. B. There are outliers, because those points are significantly different from the rest of the data. b) Write appropriate hypotheses for the test. Ho: (1) HA (2) The test statistic is t (Round to two decimal places as needed.) The P-value is (Round to three decimal places as needed.) State your conclusion for the given data set. Use a=0.05. the null hypothesis. There (4). the previous value. sufficient evidence to conclude that the mean time spend in the lab is If there are outliers, calculate the test statistic for the data set without outliers. Select the correct choice below and fill in any answer boxes within your choice. OA. The test statistic is t= (Round to two decimal places as needed.) B. There are no outliers. If there are outliers, calculate the P-value statistic for the data set without outliers. Select the correct choice below and fill in any answer boxes within your choice. OA. The P-value is (Round to three decimal places as needed.) B. There are no outliers. If there are outliers, how does this affect the conclusion?
8. Atechnology committee wants to perform a test to see if the mean amount of time students are spending in a lab has increased from 51 minutes. Here are the data from a random sample of 12 students. a) Plot the data. Are any of the observations outliers? Explain. b) What do you conclude about the claim? If there are outliers, perform the test with and without the outliers present. a) Choose the correct histogram of the data below. ○ A. 160 Time (min.) ○ B. 160 Time (min.) ○ C. D. 160 Time (min.) Time (min.) 53 57 55 76 62 52 FRIENDS 73 54 137 160 Time (min.) Are there any outliers? Select the correct choice below and fill in any answer boxes within your choice. O A. There are no outliers. All of the points are grouped together in the histogram. B. There are outliers, because those points are significantly different from the rest of the data. b) Write appropriate hypotheses for the test. Ho: (1) HA (2) The test statistic is t (Round to two decimal places as needed.) The P-value is (Round to three decimal places as needed.) State your conclusion for the given data set. Use a=0.05. the null hypothesis. There (4). the previous value. sufficient evidence to conclude that the mean time spend in the lab is If there are outliers, calculate the test statistic for the data set without outliers. Select the correct choice below and fill in any answer boxes within your choice. OA. The test statistic is t= (Round to two decimal places as needed.) B. There are no outliers. If there are outliers, calculate the P-value statistic for the data set without outliers. Select the correct choice below and fill in any answer boxes within your choice. OA. The P-value is (Round to three decimal places as needed.) B. There are no outliers. If there are outliers, how does this affect the conclusion?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Transcribed Image Text:A. Without the outliers, the conclusion changes. There is sufficient evidence to conclude that the lab time has increased. The test
should be run again with a larger sample.
B. Without the outliers, the conclusion changes. There is no longer sufficient evidence to conclude that the lab time has increased.
The test should be run again with a larger sample.
C. Without the outliers, the conclusion does not change.
D. There are no outliers.
(1)
#51
μ>51
(2)
με 51
(3)
Do not reject
(4)
is
(5)
not different from
H>51
Reject
is not
με 51
μ = 51
H=51
μ#51
greater than
less than
different from
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Transcribed Image Text:8. Atechnology committee wants to perform a test to see if the mean amount of time students are spending in a lab
has increased from 51 minutes. Here are the data from a random sample of 12 students.
a) Plot the data. Are any of the observations outliers? Explain.
b) What do you conclude about the claim? If there are outliers, perform the test with and without the outliers
present.
a) Choose the correct histogram of the data below.
A.
0
160
Time (min.)
B.
160
Time (min.)
○ C.
D.
0
160
Time (min.)
Are there any outliers? Select the correct choice below and fill in any answer boxes within your choice.
A. There are no outliers. All of the points are grouped together in the histogram.
B. There are
53
57
55
76
62
ཀྲུག=
Time (min.)
73
54
137
72
52
63
0
160
Time (min.)
outliers, because those points are significantly different from the rest of the data.
b) Write appropriate hypotheses for the test.
Ho (1)
HA (2)
The test statistic is t=
(Round to two decimal places as needed.).
The P-value is
(Round to three decimal places as needed.)
State your conclusion for the given data set. Use a 0.05.
the null hypothesis. There (4)
the previous value.
sufficient evidence to conclude that the mean time spend in the lab is
If there are outliers, calculate the test statistic for the data set without outliers. Select the correct choice below and fill in any answer boxes
within your choice.
OA. The test statistic is t=
(Round to two decimal places as needed.)
B. There are no outliers.
If there are outliers, calculate the P-value statistic for the data set without outliers. Select the correct choice below and fill in any answer
boxes within your choice.
OA. The P-value is
(Round to three decimal places as needed.)
B. There are no outliers.
If there are outliers, how does this affect the conclusion?
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