1-You look at airline records and determined that the probability of a flight being delayed is 8%.

Find the probability offlight is not delayed.

a.

0.02

b.

0.92

c.0.88

d.

0.80

2-Weekly Income of Private Industry Information WorkersThe average weekly income of information workers in private industry is $777. If the standard deviation is $77, what is the probability workers will earn, on average, between $900 to $1000 per week?

a.

0. 0.0529

b.

0.067

c.

0.4334

d.

0.0173

3-Bottled Drinking WaterAmericans drank an average of 23.2 gallons of bottled water per capita in 2004. If the standard deviation is 2.7 gallons and the variable is normally distributed. What is the probability that the selected person drank between 24 and 26 gallons?

a.

0.2336

b.

0.5231

c.

0.4231

d.

0.8231

4-At a sorority meeting, there are 7 seniors, 4 juniors, and 3 sophomores. If a committee of 6 is to be formed, find the probability that 3 fromseniors, 2 from juniors, and 1 from sophomores to be selected.

a.

0.252

b.

0.210

c.

0.186

d.

0.115

5-In how many ways can a person choose three movies to watch from a collection of 7 suggested movies?

a.

35

b.

64

c.

18

d.

165