Question 10

A salesperson purchases the deli’s specialty sandwich one day, and a mechanic purchases the deli’s specialty sandwich the next day. How would you classify these events?

Dependent, Independent

Question 11

A company sells 14 types of crackers that they label varieties 1 through 14, based on spice level. What is the probability that one purchase results in a selection of a cracker with an even number or a number less than 5?

64.3%,14.0%,35.7%,71.4%

Question 12

Of the shirts produced by a company, 6.5% have loose threads, 9.5% have crooked stitching, and 3% have loose threads and crooked stitching. Find the probability that a randomly selected shirt has loose threads or has crooked stitching.

12.5%,19.0%,13.0%,16.0%

Question 13

Randomly select a customer that drives to our store. Randomly select a customer who is 14 years old. Are these events mutually exclusive?

Non-mutually exclusive events, Mutually exclusive events

Question 14

In a sample of 780 adults, 209 said that they liked sugar cereals. Three adults are selected at random without replacement. Find the probability that all three like sugar cereals.

8.93%,1.92%, 2.98%,1.90%

Question 15

In a sample of 80 adults, 28 said that they would buy a car from a friend. Three adults are selected at random without replacement. Find the probability that none of the three would buy a car from a friend.

34.30%, 28.80%,26.90%,21.67%

Question 16

A sock drawer has 17 folded pairs of socks, with 8 pairs of white, 5 pairs of black and 4 pairs of blue. What is the probability, without looking in the drawer, that you will first select and remove a black pair, then select either a blue or a white pair?

70.59%, 22.06%, 20.76%,29.41%

Question 17

An investment advisor believes that there is a 60% chance of making money by investing in a specific stock. If the stock makes money, then there is a 50% chance that among those making money, they would also get a dividend. Find the probability that the investor makes money and receive a dividend.

10%,50%,60%,30%

Question 18

An investment advisor believes that there is a 60% chance of making money by investing in a specific stock. If the stock makes money, then there is a 50% chance that among those making money, they would also get a dividend. Find the probability that the investor makes money and receive a dividend.

50%,60%,30%,10%

Question 19

A smartphone company found in a survey that 6% of people did not own a smartphone, 15% owned a smartphone only, 26% owned a smartphone and only a tablet, 32% owned a smartphone and only a computer, and 21% owned all three. If a person were selected at random, what is the probability that the person would own a smartphone only or a smartphone and computer?

42%,32%,47%,41%