Matched Pairs vs. Two-Sample T

Twenty-five people have their cholesterol measure before eating a Big Mac and again after eating a Big Mac. On average, does eating a Big Mac increase cholesterol? 

• Matched Pairs T
• Two-Sample T

Tags

CCSS.HSS.ID.A.4

What is the difference in average ages at which teachers and plumbers retire?

• Matched Pairs T
• 2-Sample T

Tags

CCSS.HSS.ID.A.4

What is the difference in average salaries for high school graduates and college graduates?

• Matched Pairs T
• 2-Sample T

In fifty married couples, the husband and wife each separately take the same test of marital satisfaction. Is there a difference, on average, between the scores of husbands and wives? 

• Matched Pairs T
• 2-Sample T

Tags

CCSS.HSS.ID.A.4

To test the effect of background music on productivity, workers at a T-shirt factory are observed.  For one month they had no music.  For another month they had background music.  Each worker's T-shirt output is recorded.

• Matched Pairs T
• 2-Sample T

Tags

CCSS.HSS.ID.A.4

A random sample of ten workers in Plant A is to be compared to a sample of ten workers in Plant B to assess absenteeism due to illness

• Matched Pairs T
• 2-Sample T

Tags

CCSS.HSS.ID.A.4

A new reading course was tried on ten women.  Each student's reading speed was measured before the course, and again after attending the course for eight weeks

• Matched Pairs T
• 2-Sample T

To compare the average weight gain of pigs fed two different rations, nine pairs of pigs were used.  The pigs in each pair were litter-mates.

• Matched Pairs T
• 2-Sample T

Tags

CCSS.HSS.ID.A.4

To test the effects of a new fertilizer, 100 plots are treated with Fertilizer A, and 100 plots are treated with Fertilizer B.

• Matched Pairs T
• 2-Sample T

Tags

CCSS.HSS.ID.A.4

A sample of upperclassmen at your school is taken.  We wish to compare the average number of hours of sleep of juniors and seniors.

• Matched Pairs T
• 2-Sample T

Tags

CCSS.HSS.ID.A.4