Question
A Psychology professor, teaching at a large university, wants to know whether there is a difference...
A Psychology professor, teaching at a large university, wants to
know whether there is a difference between the IQs of male and
female students in attendance. She randomly and independently
selects 20 female and 20 male students and has them take the IQ
test. The resulting IQ data are as follows:
Female: 130, 117, 124, 120, 125, 109, 100, 118, 127, 130, 126, 118,
131, 104, 130, 116, 122, 115, 129, 117
Male: 106, 114, 134, 120, 107, 131, 133, 134, 122, 111, 109, 101,
144, 122, 124, 116, 120, 119, 114, 110
Test your hypothesis using 0.10 level of significance
Critical Value: _____
Computed Value: _____
Conclusion: _____
Homework Answers
Answer #1
Not the answer you're looking for?
Similar Questions
These data represent the record high temperatures for each of the 50 states. 112 100 127...
These data represent the record high temperatures for each of
the 50 states.
112
100
127
120
134
118
105
110
109
112
110
118
117
116
118
122
114
114
105
109
107
112
114
115
118
117
118
122
106
110
116
108
110
121
113
120
119
111
104
111
120
113
120
117
105
110
118
112
114
114
Construct a grouped frequency distribution for the data using 7
classes.
Construct a histogram and frequency polygon...
The following data represent the lifetimes (in hours) of a sample of 40 transistors: 112, 121,...
The following data represent the lifetimes (in hours) of a
sample of 40 transistors: 112, 121, 126, 108, 141, 90, 136, 134,
121, 118, 108, 143, 108, 122, 127, 140, 113, 117, 126, 130, 134,
120, 131, 133, 118, 125, 151, 147, 137, 140, 132, 119, 110, 124,
132, 162, 135, 130, 136, 128
a) Give a cumulative relative frequency plot of these data.
b) Treating the cumulative relative frequency plot as the
Cumulative Probability Distribution of an unknown continuous...
Problem: The IQ test scores of 45 seventh-grade girls in a Midwest school district are below....
Problem: The IQ test scores of 45 seventh-grade girls
in a Midwest school district are below.
111
107 100
107 115
111
97
112
104
106 113
109 113
128 128
118
113 124
127 136
106 123
124
126
116 127
119
97
102 110
120
103 115
93
123
79
119 110
110
107 105
105 110
77 90
Here are the IQ test scores of 30 seventh-grade boys in the same
school district. Is there good evidence...
Group 1 Group 2 139 96 134 90 125 113 120 101 115 104 91 123...
Group 1
Group 2
139
96
134
90
125
113
120
101
115
104
91
123
129
106
141
106
122
107
154
139
121
130
117
107
94
106
97
124
138
129
93
113
116
143
132
144
133
120
152
120
129
95
114
150
126
100
109
155
150
133
113
93
105
123
118
97
101
151
You need to create two HISTOGRAMS: one for Group 1 and
another for Group 2. The results reflect...
Can you show me how to do this using Excel? Suppose we gathered the data below...
Can you show me how to do this using Excel?
Suppose we gathered the data below by an unbiased
method. (The data is sorted DOWN the columns.)
111
116
119
120
123
126
128
131
136
142
115
117
119
120
123
127
129
132
136
142
115
117
120
121
123
127
129
133
138
143
115
118
120
121
123
128
131
133
138
158
116
118
120
123
125
128
131
135
141
163
(4 pts) Use the...
Construct a dot plot from the set of 50 IQ scores from randomly selected 10th graders....
Construct a dot plot from the set of 50 IQ scores from randomly
selected 10th graders. The scores are
60 73 76 77 80 81 83 84 85 87 88 89 90 91 92 93 94 94 95 96 96
97 98 99 100 100 101 102 103 103 104 105 106 107 109 110 111 112
113 114 116 117 119 120 123 124 130 133 134 141
Four different paints are advertised to have the same drying times. Use the Kruskal Wallis Test...
Four different paints are advertised to have the same drying
times. Use the Kruskal Wallis Test – Analysis of Variance by Ranks,
to verify the manufacturer’s claim. Remember that seven samples
were tested for each of the paints. The time in minutes until the
paint was dry enough for a second coat to be applied was recorded.
Below are the results. Paint 1 Rank Paint 2 Rank Paint 3 Rank Paint
4 Rank 114 112 126 115 117 118 127...
Refer to the accompanying data set of mean drive-through service times at dinner in seconds at...
Refer to the accompanying data set of mean drive-through
service times at dinner in seconds at two fast-food restaurants.
Construct a
95% confidence interval estimate of the mean drive-through
service time for Restaurant X at dinner; then do the same for
Restaurant Y. Compare the results.
Restaurant X
Restaurant Y
85
85
116
116
118
118
146
146
270
270
100
100
124
124
156
156
118
118
176
176
184
184
125
125
154
154
166
166
211
211...
Four different paints are advertised to have the same drying times. To verify the manufacturer’s claim,...
Four different paints are advertised to have the same drying
times. To verify the manufacturer’s claim, seven samples were
tested for each of the paints. The time in minutes until the paint
was dry enough for a second coat to be applied was recorded. Below
are the results which may be imported into MSExcel for analysis:
(Assume the populations are normally distributed, the populations
are independent and the population variances are equal)
Paint 1
Paint 2
Paint 3
Paint 4...
Four different paints are advertised to have the same drying times. To verify themanufacturer’s claim, seven...
Four different paints are advertised to have the same drying
times. To verify themanufacturer’s claim, seven samples were tested
for each of the paints. The time in minutes until the paint was dry
enough for a second coat to be applied was recorded. Below are the
results which may be imported into MSExcel for analysis: (Assume
the populations are normally distributed, the populations are
independent and the population variances are equal)
Paint 1 120 112 121 118 118 121 118...
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 3 minutes ago
asked 6 minutes ago
asked 20 minutes ago
asked 21 minutes ago
asked 22 minutes ago
asked 22 minutes ago
asked 29 minutes ago
asked 44 minutes ago
asked 51 minutes ago
asked 52 minutes ago
asked 54 minutes ago
asked 56 minutes ago