FIQ: Full-Scale IQ 96 88 85 97 124 101 93 94 114 113 96 87 101...
| FIQ: Full-Scale IQ |
| 96 |
| 88 |
| 85 |
| 97 |
| 124 |
| 101 |
| 93 |
| 94 |
| 114 |
| 113 |
| 96 |
| 87 |
| 101 |
| 103 |
| 127 |
| 89 |
| 87 |
| 103 |
| 96 |
| 126 |
Use the Brains data. SETUP: Is it reasonable to claim that the average IQ of the population is less than 110 ?
5. What test/procedure did you perform?
- a. One-sided t-test
- b. Two-sided t-test
- c. Regression
- d. Confidence interval
6. What is the P-value/margin of error?
- a. 2.30791
- b. 0.00166
- c. 4.72877
- d. 5.21228
- e. None of these
7. Statistical interpretation
- a. Since P-value is too large the above claim is not reasonable.
- b. Since P-value is small enough the above claim is reasonable.
- c. We are 95% certain that the 110 is not within the confidence interval.
- d. None of these.
8. Conclusion
- a. Yes, I am confident that the above claim is correct.
- b. No, we cannot claim that the above claim is correct.
Homework Answers
SEX: Sex (1=Male 2=Female) FIQ: Full-Scale IQ 1 96 1 88 1 85 1 97 1...
SEX: Sex (1=Male 2=Female) FIQ: Full-Scale IQ 1 96 1 88 1 85 1 97 1 124 1 101 1 93 1 94 1 114 1 113 2 96 2 87 2 101 2 103 2 127 2 89 2 87 2 103 2 96 2 126 I. What test/procedure did you perform? (6.66 points) a. One sided T-test b. Two sided T-test c. Regression d. Confidence interval II. Statistical interpretation? (6.66 points) a. Since P-value is small we are...
Weight IQ 88 99 112 103 107 97 112 99 80 100 86 90 103 118...
Weight IQ 88 99 112 103 107 97 112 99 80 100 86 90 103 118 121 79 116 80 82 88 65 82 107 103 100 116 91 112 110 92 113 115 105 100 108 94 90 118 73 106 102 126 99 95 80 119 114 116 90 79 95 92 106 78 86 111 106 80 Use the Weight_vs_IQ data. SETUP: Common sense dictates that a person’s IQ and Weight should not be related. However, one...
In what follows use any of the following tests/procedures: Regression, confidence intervals, one-sided t-test, or two-sided...
In what follows use any of the following tests/procedures: Regression, confidence intervals, one-sided t-test, or two-sided t-test. All the procedures should be done with 5% P-value or 95% confidence interval. Open Weight_vs_IQ data. SETUP: Common sense dictates that a person’s IQ and Weight should not be related. However, one never knows until one examines the data. Given the data (IQ and weight for 29 students) your job is to check if the common sense assumption is reasonable or maybe it...
data: https://www.limes.one/Content/DataFiles/Brains.txt In what follows use any of the following tests/procedures: Regression, confidence intervals, one-sided t-test,...
data: https://www.limes.one/Content/DataFiles/Brains.txt In what follows use any of the following tests/procedures: Regression, confidence intervals, one-sided t-test, or two-sided t-test. All the procedures should be done with 5% P-value or 95% confidence interval Open Brain data. SETUP: Common sense dictates that a person’s IQ and Weight should not be related. However, one never knows until one examines the data. Given the data your job is to check if the common sense assumption is reasonable or maybe it is not. 13. What...
In what follows use any of the following tests/procedures: Regression, multiple regression, confidence intervals, one sided...
In what follows use any of the following tests/procedures: Regression, multiple regression, confidence intervals, one sided T-test or two sided T-test. All the procedures should be done with 5% P-value or 95% confidence interval.Some answers are approximated, choose the most appropriate answer. Open Brains data. SETUP: Are the IQ’s for male and female subjects different? Given your job is to confirm or disprove this assertion. I. What test/procedure did you perform? (6.66 points) a. One sided T-test b. Two sided...
In what follows use any of the following tests/procedures: Regression, multiple regression, confidence intervals, one sided T-test or two sided T-test. All the procedures should be done with 5% P-valu...
In what follows use any of the following tests/procedures: Regression, multiple regression, confidence intervals, one sided T-test or two sided T-test. All the procedures should be done with 5% P-value or 95% confidence interval.Some answers are approximated, choose the most appropriate answer.Open Brains data. SETUP: Some people believe that the first born children are more intelligent. Given the data your job is to confirm or disprove this assertion. I. What test/procedure did you perform? (6.66 points) a. One sided T-test...
(12 points) Ten randomly selected people took an IQ test A, and next day they took...
(12 points) 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 89 87 108 122 103 7493 110 99117 Test B 91 90 109 123 101 73 94 114 98 114 1. Consider (Test A - Test B). Use a 0.01 significance level to test the claim that...
DATA IN COMMENT BELOW In what follows use any of the following tests/procedures: Regression, multiple regression,...
DATA IN COMMENT BELOW In what follows use any of the following tests/procedures: Regression, multiple regression, confidence intervals, one sided T-test or two sided T-test. All the procedures should be done with 5% P-value or 95% confidence interval.Some answers are approximated, choose the most appropriate answer. Open Cars04 data. SETUP: Is it true that average (retail) cost for the cars with 6 cylinders is higher than $35000? Given the data your job is to help answer this question. I. What...
(7 points) Ten randomly selected people took an IQ test A, and next day they took...
(7 points) 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. IJ Person A C DE F Test A 108 101 122 75 87 104 96 11889 94 Test B 105 102 122 76 87 102 100 1188697 1. Consider (Test A - Test B). Use a 0.05 significance level to test the claim that people do better on the second...
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-- g a wversity mo school a. Calcualte a point estimate of the mean value of IQ for the population of first graders at this school What estimator did you use? b. Calculate a point estimate of the IW value that separates the lowert 50% of all...
(12 points) 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 89 87 108 122 103 7493 110 99117 Test B 91 90 109 123 101 73 94 114 98 114 1. Consider (Test A - Test B). Use a 0.01 significance level to test the claim that...
(7 points) 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. IJ Person A C DE F Test A 108 101 122 75 87 104 96 11889 94 Test B 105 102 122 76 87 102 100 1188697 1. Consider (Test A - Test B). Use a 0.05 significance level to test the claim that people do better on the second...
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-- g a wversity mo school a. Calcualte a point estimate of the mean value of IQ for the population of first graders at this school What estimator did you use? b. Calculate a point estimate of the IW value that separates the lowert 50% of all...
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