WGU C955 PROBABILITY AND STATISTICS OBJECTIVE

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WGU C955 PROBABILITY AND STATISTICS OBJECTIVE

ASSESSMENT EXAM A, B & C ACTUAL EXAM QUESTIONS

AND ANSWERS ALREADY GRADED A+

WGU C955 Probability and Statistics Objective Assessment Exam A If a six-sided die is rolled 3 times, how many possible outcomes are there?

• 6
• 18
• 36
• 216
• 216

Correct. The answer is d. Each roll has 6 possible outcomes, so 3 rolls have 63 or 216 possible outcomes.If a couple has three children, how many different ways are there to order a series of boys and girls (assuming that birth order matters)?

• 3^2
• 3^3
• 2^3
• 2^2
• 2^3

Correct. The answer is c. For each child, there are two possibilities, and there are 3 children. So the number of ways to have 3 children is 2×2×2=8 . (Here they are: BBB, BGB, BBG, BGG, GBB,

GGB, GGG, GBG.) 1 / 4

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2 Lindsey has 8 pairs of shoes. Every day, Monday through Friday, Lindsey chooses a pair of shoes at random. How many possible combinations of pairs of shoes could Lindsey wear to work this week?8^5 A 66-sided die is rolled 55 times. How many possible combinations of outcomes are there after the 55 rolls?6^5 This expression reads "six raised to the twelfth." 6^12 Joe has 55 shirts, 55 jackets, 55 hats, and 55 pairs of pants. How many different outfit combinations does Joe have all together?5^4 True or False? In the expression 3+5×7, the 5×7 operation should be done first according to

PEMDAS.

• True
• False
• True

Correct. This statement is true. Multiplication and division must be done before addition and subtraction.True or False? In the expression 5+(5⋅5)3, the multiplication should be done within the parentheses before evaluating the exponent. Choose only one answer below.

• True
• False 2 / 4

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3 True Correct. This statement is true. Evaluating what is inside the parentheses first changes the expression to 5+(25)3. The problem asks us to multiply 25 by tself 3 times, not 5 by itself 3 times.

Which operation should be performed first in the following expression:

5+62−16÷4

Choose only one answer below.

• Addition
• Exponent
• Subtraction
• Division

Exponent Correct. The answer is b. Because there are no parentheses in this expression, the exponents should be evaluated first.

Which operation should be performed first in the following expression:

32−92÷(1+2)

Choose only one answer below.

• Subtraction
• Exponent
• Division
• Addition

Addition Correct. The answer is d. Whatever operations are inside the parentheses need to be performed first. 3 / 4

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4 There are 81 people coming to a conference. How many different ways can the chairs for these people be arranged into rows with an equal number of chairs in each row? Reset

• 5
• 4
• 3
• 2

a Correct. The chairs can be arranged as 1 row of 81 chairs, 3 rows of 27, 9 rows of 9, 27 rows of 3, or 81 rows of 1 for a total of 5 different ways.True or False? Two composite numbers can have exactly the same factors.Choose only one answer below.

• True
• False
• False

Correct. This statement is false. Every composite number has a unique factorization.True or False? A prime number has only itself as a factor.Choose only one answer below.

• True
• False
• False

Correct. This statement is false. 11 is also a factor of every number, prime or composite.What kind of number is 51?Choose only one answer below.

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