Question

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 | 87 | 89 | 102 | 108 | 126 | 113 | 94 | 98 | 78 |

Test B | 111 | 88 | 92 | 101 | 111 | 128 | 112 | 92 | 99 | 79 |

1. Consider (Test A - Test B). Use a 0.05 significance level to
test the claim that people do better on the second test than they
do on the first. Round calculated answers to three decimal
places.

(a) What test method should be used?

**A.** Two Sample z

**B.** Matched Pairs

**C.** Two Sample t

(b) The null hypothesis is μdiff=0μdiff=0. What is the alternate
hypothesis?

**A.** μdiff≠0μdiff≠0

**B.** μdiff<0μdiff<0

**C.** μdiff>0μdiff>0

(c) The test statistic is

(d) The p-value is

(e) Is there sufficient evidence to support the claim that
people do better on the second test?

**A.** No

**B.** Yes

2. Construct a 95% confidence interval for the mean of the
differences. Again, use (Test A - Test B).

<μ<<μ<

Answer #1

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 93 104 79 90 98 81
111 113 107 121 Test B 92 105 80 88 101 81 110 109 113 124 1.
Consider (Test A - Test B). Use a 0.01 0.01 significance level to
test the claim...

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 96 89 101 72 121
105 85 111 113 Test B 101 100 89 105 73 122 108 88 109 120 1.
Consider (Test A - Test B). Use a 0.01 0.01 significance level to
test the claim...

Please show all steps
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
77
113
97
107
95
128
100
88
112
84
Test B
76
116
101
108
96
127
99
87
112
85
1. Consider (Test A - Test B). Use a 0.010.01 significance level to...

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 84 102 105 122 79 96
94 110 89 113 Test B 84 104 107 125 82 99 94 112 92 113 1. Consider
(Test A - Test B). Use a 0.05 significance level to test the claim
that...

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
125
100
114
99
91
110
87
73
104
Test B
97
125
102
116
99
90
112
89
75
104
1. Consider (Test A - Test B). Use a 0.010.01 significance level to
test the claim that...

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
104
87
88
110
97
128
116
94
71
101
Test B
110
88
89
108
96
129
119
97
73
106
1. Consider (Test A - Test B). Use a 0.050.05 significance level to
test the claim that...

(1 point) Ten randomly selected people took an IQ test A, and
the 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
102
107
88
109
77
96
99
117
83
128
Test B
101
108
91
112
78
100
102
119
84
130
1. Consider (Test A - Test B). Use a 0.05 significance level to
test...

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
82
101
94
105
111
88
99
123
118
79
Test B
84
100
93
111
114
92
101
125
116
79
Consider (Test A - Test B). Use a 0.05 significance level to
test the claim that people...

Ten randomly selected
people took 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
101
112
99
73
91
113
93
105
124
82
Test B
102
117
98
74
92
110
92
108
125
83
Calculate (Test B - Test A) to find the differences. Use a = .05
significance level to test...

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
108
114
127
110
101
77
99
96
82
89
Test B
109
115
127
115
105
75
101
100
85
91
Consider (Test A - Test B). Use a 0.01 significance level to test
the claim that people...

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