Question

In: Statistics and Probability

2. Use the following information for problems A-D. Researchers want to determine whether or not there...

2. Use the following information for problems A-D.

Researchers want to determine whether or not there is a difference in systolic blood pressure based on how many hours a person exercises per week. They divide a sample of 72 people into 3 groups based on how many hours they exercise per week. Group 1 exercises less than 2 hours per week, Group 2 exercises between 2 and 5 hours per week, and Group 3 exercises more than 5 hours per week. Researchers measure and record the systolic blood pressure for each participant. They choose α = 0.05 level to test their results. For your convenience, I have prepared an excel file with the data titled: data_homework10_BP groups. Use this data to run a One-way Anova. Use the results of this analysis to answer problems 10-13.

A. What is the between groups degrees of freedom for this study?

a. 2

b. 3

c. 72

d. 69

Question B

True or False, this finding is statistically significant.

a. True

b. False

Question C

Based on this information, the researcher should make the decision to ___________.

a. reject the null hypothesis

b. fail to reject the null hypothesis

Question D

How do you interpret this finding? There ____ enough evidence to conclude that there is a difference between the blood pressure measurements for the 3 groups at the 0.05 significance level.

a. is

b. is not

Group 1	Group 2	Group 3
104	97	123
106	116	107
104	98	127
92	95	133
112	108	114
107	106	93
150	102	113
145	108	114
135	94	116
160	100	155
157	101	105
143	119	120
154	89	122
155	113	125
138	99	131
149	93	124
142	107	137
128	125	142
138	104	135
136	110	133
147	124	126
148	181	129
134	118	155
148	135	110

Expert Solution

orchestra answered 2 years ago

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