Question
In: Statistics and Probability
Ten randomly selected people took an IQ test A, and next day they took a very...
Ten randomly selected people took an IQ test A, and next day they took a very similar IQ test B. Their scores are shown in the table below.
| Person | A | B | C | D | E | F | G | H | I | J |
| Test A | 119 | 81 | 75 | 125 | 95 | 90 | 106 | 97 | 102 | 109 |
| Test B | 116 | 84 | 78 | 125 | 99 | 90 | 106 | 96 | 104 | 113 |
1. Consider (Test A - Test B). Use a 0.050.05 significance level to
test the claim that people do better on the second test than they
do on the first. (Note: You may wish to use software.)
(a) What test method should be used?
(b) The test statistic is
(c) The critical value is
(d) Is there sufficient evidence to support the claim that people do better on the second test?
2. Construct a 9595% confidence interval for the mean of the differences. Use (Test A - Test B).
Solutions
orchestra answered 1 year agoRelated Solutions
Ten randomly selected people took an IQ test A, and next day they took a very...
Ten randomly selected people took an IQ test A, and next day
they took a very similar IQ test B. Their scores are shown in the
table below.
Person
A
B
C
D
E
F
G
H
I
J
Test A
81
105
91
116
102
74
95
122
99
112
Test B
84
105
89
122
103
77
98
122
102
116
1. Consider (Test A - Test B). Use a 0.050.05 significance level to
test the claim that...
Ten randomly selected people took an IQ test A, and next day they took a very...
Ten randomly selected people took an IQ test A, and next day
they took a very similar IQ test B. Their scores are shown in the
table below.
Person A B C D E F G H I J
Test A 123 97 112 89 103 94 74 119 85 105
Test B 122 100 110 89 102 92 73 121 87 104
The test statistic is _
The critical value is_
Construct a 99% confidence interval for the mean...
Ten randomly selected people took an IQ test A, and next day they took a very...
Ten randomly selected people took an IQ test A, and next day
they took a very similar IQ test B. Their scores are shown in the
table below. Person A B C D E F G H I J Test A 71 119 104 100 108
127 83 97 94 92 Test B 72 119 110 105 106 130 85 100 92 91 1.
Consider (Test A - Test B). Use a 0.05 0.05 significance level to
test the claim...
Ten randomly selected people took an IQ test A. The next day they took a very...
Ten randomly selected people took an IQ test A. The next day
they took a very similar IQ test B. Their scores are shown in the
table below.
Person
1
2
3
4
5
6
7
8
9
10
Test A
106
99
95
92
87
127
115
100
77
108
Test B
112
101
99
96
90
130
112
99
80
112
1. Use a 0.05 significance level to test the claim that, on
average, people do better on...
Ten randomly selected people took an IQ test A, and next day they took a very...
Ten randomly selected people took an IQ test A, and next day
they took a very similar IQ test B. Their scores are shown in the
table below.
Person
A
B
C
D
E
F
G
H
I
J
Test A
98
107
110
118
125
79
95
101
84
91
Test B
100
106
114
118
124
77
98
99
83
89
1. Consider (Test A - Test B). Use a 0.050.05 significance level to
test the claim that...
Ten randomly selected people took an IQ test A, and next day they took a very...
Ten randomly selected people took an IQ test A, and next day
they took a very similar IQ test B.
Their scores are shown in the table below.
Person A B C D E F G H I J
Test A 106 120 113 75 83 103 111 93 89 99
Test B 104 119 116 78 82 108 108 92 91 98
1. Consider (Test A - Test B). Use a 0.01 significance level to
test the claim that...
Ten randomly selected people took an IQ test A, and next day they took a very...
Ten randomly selected people took an IQ test A, and next day
they took a very similar IQ test B. Their scores are shown in the
table below. Person A B C D E F G H I J Test A 71 84 105 99 93 119
101 126 108 90 Test B 72 86 107 102 92 120 106 128 107 95 1.
Consider (Test A - Test B). Use a 0.01 significance level to test
the claim that...
Ten randomly selected people took an IQ test A, and next day they took a very...
Ten randomly selected people took an IQ test A, and next day
they took a very similar IQ test B. Their scores are shown in the
table below. Person A B C D E F G H I J Test A 100 120 117 107 102
81 90 94 74 112 Test B 102 119 122 105 102 83 95 92 72 109 1.
Consider (Test A - Test B). Use a 0.01 significance level to test
the claim that...
Ten randomly selected people took an IQ test A, and next day they took a very...
Ten randomly selected people took an IQ test A, and next day
they took a very similar IQ test B. Their scores are shown in the
table below.
Person A B C D E F G H I J
Test A 98 108 76 82 94 89 127 119 101 108
Test B 97 114 77 82 98 94 129 121 103 106
1. Consider (Test A - Test B). Use a 0.01
0.01
(a) What test method should be...
Ten randomly selected people took an IQ test A, and next day they took a very...
Ten randomly selected people took an IQ test A, and next day
they took a very similar IQ test B. Their scores are shown in the
table below.
Person
A
B
C
D
E
F
G
H
I
J
Test A
95
89
124
105
99
114
108
73
103
84
Test B
99
91
123
110
99
119
105
72
106
86
1. Consider (Test A - Test B). Use a 0.01 significance level to
test the claim that...
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