Paired-t Assignment Subject Right hand threads (sec) Left hand threads (sec)       1 113 137 2 105 105 3 130 133 4 101 108 5 138 115 6 118 170 7 87 103 8 116 145 9 75 78 10 96 107 11 122 84 12 103 148 13 116 147 14 107 87 15 118 166 16 103 146 17 111 123 18 104 135 19 111 112 20 89 93 21 78 76 22 100 116 23 89 78 24 85 101 25 88 123 The design of controls and instruments affects how easily people can use them. A student project investigated this effect by asking 25 right handed students to turn a knob with their right hands that moved an indicator by screw action. There were two identical instruments, one with a right-hand thread and the other with a left-hand thread.  The table given has the data from the student project

MATLAB: An Introduction with Applications
6th Edition
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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Paired-t Assignment

Subject

Right hand threads (sec)

Left hand threads (sec)

      1

113

137

2

105

105

3

130

133

4

101

108

5

138

115

6

118

170

7

87

103

8

116

145

9

75

78

10

96

107

11

122

84

12

103

148

13

116

147

14

107

87

15

118

166

16

103

146

17

111

123

18

104

135

19

111

112

20

89

93

21

78

76

22

100

116

23

89

78

24

85

101

25

88

123

  1. The design of controls and instruments affects how easily people can use them. A student project investigated this effect by asking 25 right handed students to turn a knob with their right hands that moved an indicator by screw action. There were two identical instruments, one with a right-hand thread and the other with a left-hand thread.  The table given has the data from the student project.
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