Question

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 Wages data. SETUP: Is it true that male and female workers
have different wages? Given the data your job is to confirm or
disprove this assertion.

**II. Statistical interpretation? (6.66
points)**

- a. Since P-value is small we are confident that the slope is not zero.
- b. Since P-value is small we are confident that the averages are different.
- c. Since P-value is too large the test is inconclusive.
- d. None of these.

**III. Conclusion? (6.66 points)**

- a. Yes, we can confirm the assertion.
- b. No, we cannot confirm the assertion.

Answer #1

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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 Man_Body data. SETUP: Some people claim that Man chest size is
on average larger than the Hip size. Given the data your job is to
confirm or disprove this claim.
I. What test/procedure did you perform? (6.66...

In what follows use any of the following tests/procedures:
Regression, multiple regressions, 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
Upload CARS data. SETUP: It is believed that Lincolns are
heavier than 3500 pounds. Given the data your job is to confirm or
disprove this belief. Lincoln Data: 3681 3681 3768 3768 4369 4369
4474
9. What test/procedure did you perform?
a. One-sided t-test
b. Two-sided t-test
c....

In what follows use any of the following tests/procedures:
Regression, multiple regressions, 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.
Upload the data HeartRate_Exercise. These data are based on 45
randomly chosen high school students.
SETUP: Is it reasonable to claim that students who
exercise more have lower heart beat rate at rest. Given the data
your job is to confirm or disprove this claim.
5. What test/procedure...

n 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 Pollution data. SETUP: Is it reasonable to claim that cities
with precipitation of less than 100 days have average temperature
of less than 65 degrees F? Given the data your job is to confirm or
disprove this...

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 the PreLaw_Nursing data.
https://www.limes.one/Content/DataFiles/PreLaw_Nursing.txt
SETUP: The data contain the salaries for 25
people whose college majors were either Pre-law or Nursing.
Question: Do these two majors have different salaries?
9. What test/procedure did you perform?
a. One-sided t-test
b. Two-sided t-test
c. Regression
d. Confidence interval
10. What is...

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 if students who are assiduous
in attending lectures have higher final grades than students...

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 Wages data. SETUP: Is it true that more educated people have
higher wages? 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...

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.
Use the same MathCreditsSalary data.
SETUP: Is it reasonable to claim that people who
took more than 10 math credits will have average salary of 41000 or
more?
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...

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. SETUP: You
are asked to check if there is difference in the averages of Head
Circumference and Weight. Given the data, your job is to perform
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9. What test did you perform?
a. Regression
b. Multiple regression
c. One-sided t-test...

In what follows use any of the following tests/procedures:
Regression, confidence intervals, one-sided t-test, or two-sided
t-test. The procedures should be done with 5% P-value or 95%
confidence interval.
# of OpenLab visits Final grade
2 40
8 85
10 80
9 84
15 90
7 72
5 50
4 59
8 85
10 70
7 66
7 70
5 63
4 60
4 59
11 79
3 82
9 90
10 82
9 76
14 85
6 73
5...

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