Question 7

The following lists of data represent five separate departments'technicians overtime for a week. Which has the smallest standarddeviation?

Select the correct answer below:

a)28, 26, 20, 17, 21, 29, 28, 28, 17, 22

b)14, 15, 15, 12, 11, 14, 11, 13, 14, 12

c)34, 26, 34, 26, 22, 34, 24, 26, 25, 24

d)21, 15, 14, 27, 21, 24, 27, 20, 20, 30

e)9, 17, 21, 9, 14, 18, 22, 10, 12, 16

Question 8

A deck of cards contains RED cards numbered 1,2,3,4,5,6 and BLUEcards numbered 1,2,3. Let R be the event of drawing a red card, Bthe event of drawing a blue card, E the event of drawing an evennumbered card, and O the event of drawing an odd card.

Drawing the Blue 2 is an example of which of the followingevents? Select all correct answers.

Select all that apply:

B AND O

R OR E

E?

B?

R AND E

O?

B AND E

Question 9

If A and B are events with P(A)=0.2, P(A OR B)=0.62, and P(A ANDB)=0.18, find P(B).

Provide your answer below:

Question 10

The probability of buying a movie ticket with a popcorn couponis 0.608. If you buy 10 movie tickets, what is the probability that3 or more of the tickets have popcorn coupons? (Round your answerto 3 decimal places if necessary.)

Provide your answer below:

P(X greater than or equal to 3)=

Question 11

At a certain company, the mentoring program and the communityoutreach program meet at the same time, so it is impossible for anemployee to do both. If the probability that an employeeparticipates in the mentoring program is 0.51, and the probabilitythat an employee participates in the outreach program is 0.21, whatis the probability that an employee does the mentoring program orthe community outreach program?

Provide your answer below:

Question 12

A grain elevator measures the weight of each truck that deliversgrain to their site. What is the level of measurement of thedata?

a)Nominal

b)Ordinal

c)Interval

d)Ratio

Question 13

Let W be the event that a randomly chosen person works for thecity government. Let V be the event that a randomly chosen personwill vote in the election. Place the correct event in each responsebox below to show:

Given that the person works for the city government, theprobability that a randomly chosen person has will vote in theelection.

P(_ _ )

Question 14

Carlos and Devon both accepted new jobs at different companies.Carlos's starting salary is $42,000 and Devon's starting salary is$40,000. They are curious to know who has the better startingsalary, when compared to the salary distributions of their newemployers.

A website that collects salary information from a sample ofemployees for a number of major employers reports that Carlos'scompany offers a mean salary of $52,000 with a standard deviationof $8,000. Devon's company offers a mean salary of $48,000 with astandard deviation of $5,000.

Find the z-scores corresponding to each of their startingsalaries. Round to two decimal places, if necessary.

Provide your answer below:

Carlos's z-score:

Devon's z-score:

Question 15

A deck of cards contains RED cards numbered 1,2,3,4,5, BLUEcards numbered 1,2,3,4,5,6, and GREEN cards numbered 1,2. If asingle card is picked at random, what is the probability that thecard is GREEN?

Select the correct answer below:

6/13

3/13

5/13

2/13

12/13

10/13