Question

The heights of five randomly selected players on two different basketball teams are shown.

Team A: 76 inches, 68 inches, 70 inches, 74 inches, 67 inches
Team B: 75 inches, 64 inches, 78 inches, 65 inches, 68 inches

What inference can be made?


QUESTION 2

At two competitive car repair shops a random selection of 8 cars is taken. The total repair bills for these cars are shown.

Shop A: $458, $524, $539, $585, $652, $681, $714, $1072
Shop B: $246, $385, $456, $520, $692, $793, $1048, $1326

What inference can be made?

The repair bills at Shop A vary more than the repair bills at Shop B.


The mean repair bill at Shop A is more than the mean repair bill at Shop B.


The mean repair bill for both shops is less than $700.


Shop A is faster at repairing cars than Shop B.

QUESTION 3

At two competitive car repair shops a random selection of 8 cars is taken. The total repair bills for these cars are shown.

Shop A: $458, $524, $539, $585, $652, $681, $714, $872
Shop B: $246, $385, $456, $692, $893, $1048, $1326, $1624

What inference can be made?

The mean repair bill for both shops is less than $800.


Shop A is faster at repairing cars than Shop B.


The mean repair bill at Shop A is less than the mean repair bill at Shop B.


The repair bills at Shop A vary more than the repair bills at Shop B.

Answer 1

Answer: The actual correct answer was for question 1, The range in heights for Team B is greater than the range in heights for Team B.

Explanation:

Answer 2

You have multiple questions here. I can help you with the first one.

To compare the groups, we can find the mean. To find the mean of each group, add up the values and divide by 5.

Team A: 355 / 5 = 71
Team B: 350 / 5 = 70

You can also look at the median of each group. That is the middle number.

Team A: 67 68 70 74 76
Team B: 64 65 68 75 78

In both cases, Team A is taller. You could say that Team A has a taller team.