Unit 11 Probability and Statistics Homework 1 & 2 Answers

Unit 11 Probability and Statistics Homework 1 & 2 Answers

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Sample Probability and Statistics Homework questions & Answers

  1. What is the probability that a randomly selected person has a blood type of A positive?

There are four blood types (A, B, AB, and O), so the probability of having a blood type of A positive is 1/4 or 0.25.

2. What is the probability that a randomly selected person has a blood type of either A positive or O negative?

There are four blood types (A, B, AB, and O), so the probability of having a blood type of A positive or O negative is 1/2 or 0.50.

3. What is the probability that a randomly selected person has a blood type of B negative?

There are four blood types (A, B, AB, and O), so the probability of having a blood type of B negative is 1/4 or 0.25.

4. What is the probability that a randomly selected person has a blood type of AB positive?

There are four blood types (A, B, AB, and O), so the probability of having a blood type of AB positive is 1/4 or 0.25.

5. Find the mean, median, mode, range, variance, and standard deviation for the following set of data:

2, 4, 6, 8, 10

Mean: 6 Median: 6 Mode: 6 Range: 8 Variance: 4 Standard Deviation: 2

6. Find the mean, median, mode, range, variance, and standard deviation for the following set of data:

5, 10, 15, 20

Mean: 15 Median: 15 Mode: 15 Range: 15 Variance: 25 Standard Deviation: 5

7. Find the mean, median, mode, range, variance, and standard deviation for the following set of data:

1, 4, 7, 10

Mean: 5.5 Median: 4 Mode: 4 Range: 9 Variance: 9 Standard Deviation: 3

8. The following table shows the number of hits per game for five professional baseball players. Find the mean, median, mode, range, variance, and standard deviation for the data.

Player Hits Per Game

A 2

B 3

C 3

D 4

E 5 Mean: 3 Median: 3 Mode: 3 Range: 3 Variance: 2 Standard Deviation: 1.4

6) The following table shows the ages of a group of people. Find the mean, median, mode, range, variance, and standard deviation for the data.

Age

18

19

20

21

22 Mean: 20 Median: 20 Mode: 20 Range: 4 Variance: 1 Standard Deviation: 1

7) The following table shows the ages of a group of people. Find the mean, median, mode, range, variance, and standard deviation for the data.

Age

15

16

17

18 Mean: 16 Median: 16 Mode: 16 Range: 3 Variance: 1 Standard Deviation: 1

8) The following table shows the ages of a group of people. Find the mean, median, mode, range, variance, and standard deviation for the data.

Age

13

14

15

16

17 Mean: 15 Median: 15 Mode: 15 Range: 4 Variance: 2 Standard Deviation: 1.4

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