3.There are 10 cats, 15 dogs, and 12 birds in a shelter. One animal is randomly

Question

3.There are 10 cats, 15 dogs, and 12 birds in a shelter. One animal is randomly selected. What is P(dog and cat)?

* 0

* 0.676

* none

* 1

* 25

4.Let A = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}. Two numbers are randomly selected with replacement. Find the probability of selecting two numbers that are multiples of 3.

* 0.09

*0.999

* 0.3

* none

0.6

5.The table below represents the results of a survey about food preference for a group of students broken down according to gender.

Male

Female

Pizza

15

18

Chicken Wings

21

12

If one student is randomly selected, find the probability of selecting a male student or a student that prefers chicken wings, that is, P(male or wings)?

Question 5 options:

0.48

None of the other answer options are correct.

1

0.5

0.545

6. Let h represent the height of a man in inches. Select an appropriate translation for “The probability a man is more than 70 inches tall.”

P(h < 70)

P(h > 70)

P (h = 70)

None of the other answer options are correct.

P(h + 70)

7.Let A = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}. One number is randomly selected. Find P(Odd or Multiple of 3).

* 0.7

* 0.3

* none

* 0.5

* 0.6

8.If one letter is randomly selected from the word INTERESTING, what is the probability that it is an N or an I?

* 0.4

* none

* 2/11

*4/121

* 11/4

9.The table below represents the results of a survey about food preference for a group of students broken down according to gender.

Male

Female

Pizza

15

18

Chicken Wings

21

12

If one student is randomly selected, find the probability of selecting a student that prefers pizza?

Question 9 options:

None of the other answer options are correct.

0.33

2

0.36

0.5

10.The table below represents the results of a survey about food preference for a group of students broken down according to gender.

Male

Female

Pizza

15

18

Chicken Wings

21

12

If one student is randomly selected, find the probability of selecting a student that is female and prefers a pizza, that is P(female and pizza)?

Question 10 options:

0.545

0.273

0.18

0.682

None of the other answer options are correct

Male

Female

Pizza

15

18

Chicken Wings

21

12

Explanation / Answer

3.

An animal can never be a dog and a cat at the same time. Hence,

P(dog and cat) = 0 [ANSWER, A]

*****************

4.

There are 10*10 = 100 ways to choose any 2 numbers.

There are 3 numbers that are multiples of 3. Hence, there are 3*3 = 9 ways to choose both multiples of 3.

Hence,

P(both multiples of 3) = 9/100 = 0.09 [ANSWER, A]

********************

5.

There are 15+18+21+12 = 66 people here.

Hence,

P(male or wings) = (15+21+12)/66 = 0.727272727 [ANSWER, NONE OF THE OTHER OPTIONS ARE CORRECT]

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