11/12 What is the 90% confidence interval for the mean difference in pulse rates of men versus women? The lower bound is_. The upper bound is_. Round to two decimal places as needed. should we reject or do not reject this?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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Chapter10: Statistics
Section10.3: Measures Of Spread
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11/12

What is the 90% confidence interval for the mean difference in pulse rates of men versus women? The lower bound is_. The upper bound is_. Round to two decimal places as needed.

should we reject or do not reject this?

A physical therapist wanted to know whether the mean step pulse of men was less than
the mean step pulse of women. She randomly selected 52 men and 72 women to
participate in the study. Each subject was required to step up and down a 6-inch
platform. The pulse of each subject was then recorded. The following results were
obtained.
Two sample T for Men vs Women
Mean
112.5
118.7
N.
StDev
SE Mean
52
72
90% CI for mu Men- mu Women
Men
Women
11.7
1.6
1.7
14.4
(- 10.11, - 2.29)
T-Test mu Men mu Women (vs <)
T- -2,64 P-0.0047 DF= 120
CA. Ho P1=#2; Ha H1<P2
%3D
O B. Ho H =2; Ha H1 7 H2
%3D
(b) Identify the P-value and state the researcher's conclusion if the level of significance was a = 0.01. What is the P-value?
P-value = 0.0047
Enter your answer in the edit fields and then click Check Answer.
Transcribed Image Text:A physical therapist wanted to know whether the mean step pulse of men was less than the mean step pulse of women. She randomly selected 52 men and 72 women to participate in the study. Each subject was required to step up and down a 6-inch platform. The pulse of each subject was then recorded. The following results were obtained. Two sample T for Men vs Women Mean 112.5 118.7 N. StDev SE Mean 52 72 90% CI for mu Men- mu Women Men Women 11.7 1.6 1.7 14.4 (- 10.11, - 2.29) T-Test mu Men mu Women (vs <) T- -2,64 P-0.0047 DF= 120 CA. Ho P1=#2; Ha H1<P2 %3D O B. Ho H =2; Ha H1 7 H2 %3D (b) Identify the P-value and state the researcher's conclusion if the level of significance was a = 0.01. What is the P-value? P-value = 0.0047 Enter your answer in the edit fields and then click Check Answer.
Heip
A physical therapist wanted to know whether the mean step pulse of men was less than
the mean step pulse of women. She randomly selected 52 men and 72 women to
participate in the study. Each subject was required to step up and down a 6-inch
platform. The pulse of each subject was then recorded. The following results were
obtained.
Two sample T for Men vs Women
Mean
StDev
SE Mean
Men
Women
52
72
90% Cl for mu Men - mu Women
112.5
11.7
1.6
118.7
14.4
1.7
(- 10.11, -2.29)
T-Test mu Men = mu Women (vs <)
T= -2.64 P= 0.0047 DF = 120
OC. Reject Ho, there is not sufficient evidence to conclude that the mean step pulse of men was less than the mean step pulse of women
D. Reject Ho, there is sufficient evidence to conclude that the mean step pulse of men was less than the mean step pulse of women
(c) What is the 90% confidence interval for the mean difference in pulse rates of men versus women?
The lower bound is
The upper bound is
(Round to two decimal places as needed.)
Transcribed Image Text:Heip A physical therapist wanted to know whether the mean step pulse of men was less than the mean step pulse of women. She randomly selected 52 men and 72 women to participate in the study. Each subject was required to step up and down a 6-inch platform. The pulse of each subject was then recorded. The following results were obtained. Two sample T for Men vs Women Mean StDev SE Mean Men Women 52 72 90% Cl for mu Men - mu Women 112.5 11.7 1.6 118.7 14.4 1.7 (- 10.11, -2.29) T-Test mu Men = mu Women (vs <) T= -2.64 P= 0.0047 DF = 120 OC. Reject Ho, there is not sufficient evidence to conclude that the mean step pulse of men was less than the mean step pulse of women D. Reject Ho, there is sufficient evidence to conclude that the mean step pulse of men was less than the mean step pulse of women (c) What is the 90% confidence interval for the mean difference in pulse rates of men versus women? The lower bound is The upper bound is (Round to two decimal places as needed.)
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