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,...

Question

Question

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 test/procedure did you perform?

a. One-sided t-test
b. Two-sided t-test
c. Regression
d. Confidence interval

14. What is the P-value/margin of error?

a. 1.99942E-07
b. 0.990977927
c. 6.72998E-05
d. 0.0001346
e. None of these

15. Statistical interpretation

a. Since P-value is very small we can confirm the common sense assumption that IQ and Weight are not related.
b. Since P-value is large we cannot claim that averages are different .
c. Since P-value is large we cannot claim that IQ and Weight are related.
d. None of these

16. Conclusion

a. I have no statistical evidence to claim that IQ and Weight are related.
b. I am confident that IQ and Weight are related.
c. I am confident that IQ and Weight are not related.

math Statistics-And-Probability

Add a comment Improve this question Transcribed image text

Answer 1

✔ Recommended Answer

Answer #1

13. We will conduct a regression test to check if there is any linear relationship between IQ and Weight.
Hence, C) Regression is the correct option.

14. Let's run the regression test in Microsoft Excel by going to Data -> Data analysis -> Regression. The test results are:

SUMMARY OUTPUT

Regression Statistics
Multiple R	0.002703
R Square	7.3E-06
Adjusted R Square	-0.05555
Standard Error	20.5905
Observations	20

ANOVA
	df	SS	MS	F	Significance F
Regression	1	0.055737	0.055737	0.000131	0.990978
Residual	18	7631.436	423.9687
Total	19	7631.491

	Coefficients	Standard Error	t Stat	P-value	Lower 95%	Upper 95%	Lower 95.0%	Upper 95.0%
Intercept	78.21778	36.40676	2.148441	0.045537	1.730027	154.7055	1.730027	154.7055
IQ	-0.0041	0.357569	-0.01147	0.990978	-0.75532	0.747124	-0.75532	0.747124

We can see that the p-value of the slope (in bold) is 0.9900978. Hence, option B) is correct.

3. Since the p-value is very large, we cannot claim that the variables weight and IQ are related to each other. Hence, C) is correct.

16. Conclusion: a) We do not have enough evidence to say that weight and IQ are related. A) is correct.

Add a comment

Answer 2

Similar Homework Help Questions

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...
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...
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...

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: Regression, multiple regression, one-sided t-test or two-sided...

In what follows use any of the following tests: Regression, multiple regression, one-sided t-test or two-sided t-test. All conclusions should be based on 5% P-value threshold. Choose the best fitting answer. Open Brains data and create two columns: first containing male head circumference and second containing female head circumference. 13. Task A: Perform two-sided t-test comparing the two columns (male and female head circumference). What is the P-value? a. 0.000906932 b. 0.001813863 c. 0.300805939 d. 0.000303496 14. Task B: Perform...
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: Regression, multiple regression, one-sided t-test or two-sided...

In what follows use any of the following tests: Regression, multiple regression, one-sided t-test or two-sided t-test. All conclusions should be based on 5% P-value threshold. Choose the best fitting answer. Open Brains data. 13. Task A: Perform two-sided t-test comparing the IQ and brain volume. What is the P-value? a. 2.30863E-19 b. 1.15432E-19 c. 0.001164071 d. 0.790616477 14. Task B: Perform regression where X-axis is the Volume and Y-axis is the IQ. What is the P-value related to the...
Based on the question what is the answer to number one In what follows use any...

Based on the question what is the answer to number one 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 The empirical literature suggests that class absenteeism undermines students' academic performance and that an enforced mandatory attendance policy may be beneficial Open Attendance data. Using data on 90 second-year students enrolled in a Statistics course, test students who are...
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...

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...

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,...

Homework Answers

Add Answer to:
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,...

Post as a guest

Earn Coins

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, multiple regression, confidence intervals, one sided T-test or two sided T-test. All the procedures should be done with 5% P-valu...

DATA IN COMMENT BELOW In what follows use any of the following tests/procedures: Regression, multiple regression,...

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: Regression, multiple regression, one-sided t-test or two-sided...

Weight IQ 88 99 112 103 107 97 112 99 80 100 86 90 103 118...

In what follows use any of the following tests: Regression, multiple regression, one-sided t-test or two-sided...

Based on the question what is the answer to number one In what follows use any...

FIQ: Full-Scale IQ 96 88 85 97 124 101 93 94 114 113 96 87 101...

SEX: Sex (1=Male 2=Female) FIQ: Full-Scale IQ 1 96 1 88 1 85 1 97 1...

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,...

Homework Answers

Add Answer to: 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,...

Post as a guest

Earn Coins

Add Answer to:
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,...