Research Data - Prisoner IQ Scores 96 99 102 107 115 65 91 100 97 76 86 79 101 8
ID: 3339318 • Letter: R
Question
Research Data - Prisoner IQ Scores
96
99
102
107
115
65
91
100
97
76
86
79
101
85
91
106
88
98
89
128
110
86
92
95
123
105
102
95
90
103
1.) Based on an alpha of 0.05, what would be the critical value for this Z test.
2.) Is the sample selected a Random Sample?
3.) Based on the parameters given, and statistics that you calculated earlier, compute the Z test value. What is it?
4.) is there enough evidence to Reject the Null? (reply by typing the following: Reject / Fail to Reject Null)
Research Data - Prisoner IQ Scores
96
99
102
107
115
65
91
100
97
76
86
79
101
85
91
106
88
98
89
128
110
86
92
95
123
105
102
95
90
103
Explanation / Answer
To test hypothesis that
H0: mu=96.67 Vs H1: mu not Equal to., 96.67
————— 31/10/2017 05:39:25 AM ————————————————————
Welcome to Minitab, press F1 for help.
MTB > Describe 'IQ Score'.
Descriptive Statistics: IQ Score
Variable N N* Mean SE Mean StDev Minimum Q1 Median Q3
IQ Score 30 0 96.67 2.39 13.08 65.00 88.75 96.50 103.50
Variable Maximum
IQ Score 128.00
MTB > OneZ 30 96.67;
SUBC> Sigma 13.08;
SUBC> Test 96.07;
SUBC> GHistogram.
One-Sample Z
* NOTE * Graphs cannot be made with summarized data.
Test of mu = 96.07 vs not = 96.07
The assumed standard deviation = 13.08
N Mean SE Mean 95% CI Z P
30 96.67 2.39 (91.99, 101.35) 0.25 0.802
Conclusion : Mean will be 96.67
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