MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Transcribed Image Text:A researcher is interested in investigating whether the military branch a person slgns up for and the
person's blood type are dependent. The table below shows the results of a survey.
Frequencies of Military Branch and
Blood Type
A
B
AB
Army
Navy
Air Force
100
50
42
25
122
62
40
28
115
78
42
28
Marines
125
88
50
23
What can be concluded at the a 0.05 significance level?
a. What is the correct statistical test to use?
O Homogeneity
O Paired t-test
O Independence
O Goodness-of-Fit
b. What are the null and alternative hypotheses?
Но:
O Blood type and branch of the military are dependent.
O The distribution of blood types is not the same for each branch of the military.
O The distribution of blood types is the same for each branch of the military.
O Blood type and branch of the military are independent.
H1 :
Ttranch of the military are dependent.
Transcribed Image Text:H1:
O Blood type and branch of the military are dependent.
O The distribution of blood types is not the same for each branch of the military.
O The distribution of blood types is the same for each branch of the military.
O Blood type and branch of the military are independent.
c. The test-statistic for this data =
(Please show your answer to three decimal places.)
d. The p-value for this sample
(Please show your answer to four decimal places.)
e. The p-value is Select an answer
f. Based on this, we should
O fail to reject the null
O reject the null
O accept the null
g. Thus, the final conclusion is...
O There is insufficient evidence to conclude that the distribution of blood types is not the same
for each branch of the military.
O There is insufficient evidence to conclude that blood type and branch of the military are
dependent.
O There is sufficient evidence to conclude that blood type and branch of the military are
dependent.
O There is sufficient evidence to conclude that blood type and branch of the military are
independent.
O There is sufficient evidence to conclude that the distribution of blood types is not the same for
each branch of the military
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