Group A 8.2 10.5 9 | 13.5 Group B | 12 | 9.5 11 | 10.5 | 11.5 12.5 13 12 10 12 11

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Researchers wished to know if they could conclude that two populations of infants (Groups A, B) differed with respect to the mean age at which they first walked alone. A random sample of 7 infants
from group A and 8 infants from group B gave the following data (ages in months).
Group A 8.2 10.5
Group B 12
13.5
9.5 11 10.5 11.5 12.5 13 12
10
12
11
Using a suitable hypothesis test, investigate at the 5% significance level to decide whether the mean age at which the infants first walked alone is different for the two groups.
Transcribed Image Text:Researchers wished to know if they could conclude that two populations of infants (Groups A, B) differed with respect to the mean age at which they first walked alone. A random sample of 7 infants from group A and 8 infants from group B gave the following data (ages in months). Group A 8.2 10.5 Group B 12 13.5 9.5 11 10.5 11.5 12.5 13 12 10 12 11 Using a suitable hypothesis test, investigate at the 5% significance level to decide whether the mean age at which the infants first walked alone is different for the two groups.
do not reject mean confidence is significance is not reject median
Drag-and-drop from the options above to complete the conclusion of the test:
At 5%
level we
the null hypothesis and conclude that there
a significant difference in the
age at which infants walked alone
between the two populations.
Transcribed Image Text:do not reject mean confidence is significance is not reject median Drag-and-drop from the options above to complete the conclusion of the test: At 5% level we the null hypothesis and conclude that there a significant difference in the age at which infants walked alone between the two populations.
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