Question 1 2 pts

Let x represent the number of pets in pet stores. This would be considered what type of variable:

Discrete

Nonsensical

Continuous

Lagging

Question 2 2 pts

Let x represent sheets of paper in a package. This would be considered what type of variable:

Distributed

Continuous

Inferential

Discrete

Question 3 2 pts

Consider the following table.

Age Group Frequency

18-29 9831

30-39 7845

40-49 6869

50-59 6323

60-69 5410

70 and over 5279

If you created the probability distribution for these data, what would be the probability of 40-49?

16.5%

18.9%

23.7%

42.5%

Question 4 2 pts

Consider the following table.

Weekly hours worked Probability

1-30 (average=22) 0.08

31-40 (average=35) 0.16

41-50 (average=46) 0.72

51 and over (average=61) 0.04

Find the mean of this variable.