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Unit Test — Unit test Answers

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Michael practiced batting and kept track of his hits. He missed 2 balls but hit 8 balls that were pitched to him. How many balls can Michael predict to hit if he is pitched 20 balls?

A
4 balls
B
8 balls
C
16 balls
D
18 balls
22
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Jillian has three different bracelets (X, Y, and Z) to give to her friends as gifts in any order she prefers. If bracelet Y is chosen first, in how many ways can Jillian give out the bracelets?

A
1
B
2
C
3
D
4
23

A spinner with 4 colors is spun for a total of 50 trials. Yellow was selected 10 times. What is the experimental probability of the spinner landing on yellow?

A
StartFraction 2 over 25 EndFraction
Option A
B
One-fifth
Option B
C
One-fourth
Option C
D
Two-fifths
Option D
24

A box contains 2 purple marbles, 2 blue marbles, 3 green marbles, and 5 red marbles. Which color marble is most likely to be picked?

Question illustration
A
purple
B
blue
C
green
D
red
25

The diagram shows the number of children who have ever used motorized scooters, manual scooters, and/or bicycles.

Question illustration
A
motor ⋃ manual
B
motor ⋃ bicycle
C
motor ∩ manual
D
motor ∩ bicycle
26

A coin is thrown at random into the rectangle below.What is the likelihood that the coin will land in the green region?

Question illustration
A
It is certain.
B
It is impossible.
C
It is likely.
D
It is unlikely.
27

A standard deck of 52 cards contains 13 cards with hearts, 13 with diamonds, 13 with clubs, and 13 with spades. How many 7-card hands are possible with 2 hearts, 2 diamonds, 2 clubs, and 1 spade? Assume that the order of the cards does not matter, and use the formula for combinations to find your answer.

A
474,552
B
6,169,176
C
49,353,408
D
133,784,560

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