any studies have been conducted to test the effects of marijuana use on mental abilities. In one such study, groups of light and heavy users of marijuana in college were tested for memory recall, with the results given below. Use a a 0.05 significance level to test the claim that in the population of heavy marijuana users, the mean number of items sorted correctly is lower than the mean number in the population of light users. Items sorted correctly by light marijuan users: n = 64, x overbar equals 53.5 , s = 3.6 Items sorted correctly by heavy marijuan users: n = 65, x overbar equals 51.3 , s = 4.5
any studies have been conducted to test the effects of marijuana use on mental abilities. In one such study, groups of light and heavy users of marijuana in college were tested for memory recall, with the results given below. Use a a 0.05 significance level to test the claim that in the population of heavy marijuana users, the mean number of items sorted correctly is lower than the mean number in the population of light users. Items sorted correctly by light marijuan users: n = 64, x overbar equals 53.5 , s = 3.6 Items sorted correctly by heavy marijuan users: n = 65, x overbar equals 51.3 , s = 4.5
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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any studies have been conducted to test the effects of marijuana use on mental abilities. In one such study, groups of light and heavy users of marijuana in college were tested for memory recall, with the results given below. Use a a 0.05 significance level to test the claim that in the population of heavy marijuana users, the mean number of items sorted correctly is lower than the mean number in the population of light users.
Items sorted correctly by light marijuan users: n = 64,
x overbar equals
53.5
,
s = 3.6Items sorted correctly by heavy marijuan users: n = 65,
x overbar equals
51.3
,
s = 4.5a. Define the parameters
A.
p 1 equals
p 2 equals
B.
mu 1 equals
mu 2 equals
C.
p 1 equals
p 2 equals
D.
mu 1 equals
mu 2 equals
b. State the null and alternative hypotheses
A.
Upper H 0 : mu 1 equals
53.5
Upper H 1 : mu 2 equals
51.3
B.
Upper H 0 : mu 1 equals mu 2 Upper H 1 : mu 1 greater than mu 2
C.
Upper H 0 : p 1 equals p 2 Upper H 1 : p 1 greater than p 2
D.
Upper H 0 : mu 1 equals mu 2 Upper H 1 : mu 1 less than mu 2
c. Calculate the P-value. Which of these options is closest to its value?
A.
0.0005
B.
0.0013
C.
0.0049
D.
0.0027
d. State the technical conclusion
A.
Do not reject Upper H 0
B.
Reject Upper H 0
e. State the final conclusion
A.
There is not sufficient sample evidence to support the claim.
B.
There is sufficient evidence to warrant rejection of the claim.
C.
The sample data support the claim.
D.
There is not sufficient evidence to warrant rejection of the claim.
f. Should marijuana use be of concern to students?
A.
No
B.
Yes
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