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Probability/statistics Review
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Instructions: Answer all questions to get your test result.
1) There are 12 sixth graders, 11 seventh graders, and 9 eighth graders in a gym class. The gym teacher randomly selects one student to collect balls. In how many ways can choosing not a seventh grader occur?
A
21 ways
B
11 ways
C
31 ways
D
20 ways
2) There are 7 sixth graders, 13 seventh graders, and 15 eighth graders in a gym class. The gym teacher randomly selects one student to collect balls. In how many ways can choosing not a seventh grader occur?
A
22 ways
B
11 ways
C
21 ways
D
30 ways
3) There are 16 sixth graders, 14 seventh graders, and 7 eighth graders in a gym class. The gym teacher randomly selects one student to collect balls. In how many ways can choosing not a seventh grader occur?
A
23
B
11
C
33
D
21
4) Identify the population: Biologists netted and released 146 fish in the local reservoir.
A
pond
B
The 146 fish that were netted and released
C
All of the fish in the reservoir
D
biologists
5) Identify the sample: Biologists netted and released 146 fish in the local reservoir.
A
The 146 fish that were netted and released
B
All of the fish in the reservoir
C
biologists
D
pond
6) 70 48 68 50 43 58 43 30 50 36 31 43 44 49 39 49 55 40 58 43 63 find the mean:
A
48.2
B
48
C
48.1
D
50
7) 70 61 84 85 73 85 67 88 73 86 65 82 87 84 65 74 70 79 90 72 85 find the mean
A
87
B
77.4
C
86
D
77
8) size:Small, Medium, Large, Extra Large ;Color:White, Black, Gray, Blue, Red. How many total outcomes possible?
A
8
B
20
C
15
D
10
9) You roll a 6 sided die what are the odds of rolling a 6?
A
1/6
B
6
C
1
D
50%
10) What is your teachers name?
A
Mrs. Teacher
B
Mrs. Scarfo
C
school is fun
D
I don't know
*select an answer for all questions
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