1.During a52-week period, a company paid overtime wages for 19

19 weeks and hired temporary help for 7

7 weeks. During 4

4 weeks, the company paid overtime and hired temporary help. Complete parts(a) and(b) below.

(a) Are the events"selecting a week that contained overtimewages" and"selecting a week that contained temporary helpwages" mutuallyexclusive?

No

Yes

(b) If an auditor randomly examined the payroll records for only oneweek, what is the probability that the payroll for that week contained overtime wages or temporary helpwages?

P(overtime wages or temporary helpwages) =

nothing

(Round to the nearest thousandth asneeded.)

2. A doctor gives a patient a 60 % chance of surviving bypass surgery after a heart attack. If the patient survives thesurgery, then the patient has a 25% chance that the heart damage will heal. Find the probability that the patient survives the surgery and the heart damage heals.

The probability is ____

nothing

(Type an integer or adecimal.)

3. About 40% of babies born with a certain ailment recover fully. A hospital is caring for five babies born with this ailment. The random variable represents the number of babies that recover fully. Decide whether the experiment is a binomial experiment. If itis, identify asuccess, specify the values ofn, p, andq, and list the possible values of the random variable x.

Is the experiment a binomialexperiment?

Yes

No

What is a success in thisexperiment?

This is not a binomial experiment.

Baby recovers

Babydoesn't recover

Specify the value of n. Select the correct choice below and fill in any answer boxes in your choice.

A.

n equals

n=

nothing

B.

This is not a binomial experiment.

Specify the value of p. Select the correct choice below and fill in any answer boxes in your choice.

A.

p equals

p=

nothing

B.

This is not a binomial experiment.

Specify the value of q. Select the correct choice below and fill in any answer boxes in your choice.

A.

q equals

q=

nothing

B.

This is not a binomial experiment.

List the possible values of the random variable x.

x equals

x=0, 1, 2,..., 5

5

x equals

x=0, 1, 2,..., 4

4

x equals

x=1, 2, 3,..., 5

5

This is not a binomial experiment.

4.29% of college students say they use credit cards because of the rewards program. You randomly select 10 college students and ask each to name the reason he or she uses credit cards. Find the probability that the number of college students who say they use credit cards because of the rewards program is(a) exactlytwo, (b) more thantwo,and(c) between two and five inclusive. Ifconvenient, use technology to find the probabilities.

(a) P(2)equals =

(Round to the nearest thousandth asneeded.)

(b) P(x>2)equals =

(Round to the nearest thousandth asneeded.)

(c) P(2xless than or 5)equals =

(Round to the nearest thousandth asneeded.)