Term
given: mean = 40; standard deviation=2
1) What percentage of data lies between 38 and 42?
2) 95% of the data lies between what 2 numbers?
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Definition
1. a) 34%
b) 68%
c) 95%
d) 99.7%
2. a) 40 and 44
b) 38 and 44
c) 38 and 46
d) 36 and 44 |
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Term
given: mean=8.7 standard deviation=1.2
Find the probability of choosing a value
1) between 8.7 and 11.1
2) a most 7.5
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Definition
1. a) 34%
b)47.5%
c) 49.85%
d) 68%
2) a) 2.5%
b) 16%
c) 34%
d) 47.5% |
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Term
Given mean = 120; standard deviation = 10
1. Find P(90< x <140)
2. Find P(x > 150)
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Definition
1. a) 68%
b) 99.7%
c) 95%
d) 97.35%
2. a) .15%
b) 1.5%
c) 2.5%
d) 99.85%
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Term
given mean = 88; standard deviation = 3
1. Between what two numbers does 68% of the data lie?
2. 95%?
3. 99.7%?
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Definition
For questions 1-3 use the following answer choices:
a) between 88 and 91
b) between 85 and 91
c) between 85 and 94
d) between 88 and 94
e) between 79 and 94
f) between 82 and 94
g) between 79 and 97 |
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Term
given mean = 15 and standard deviation = 1.5
Find the probability of getting a value
1) at least 10.5
2) at most 10.5
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Definition
Use the following answer choices for 1 and 2:
a. 0.15%
b. 16%
c. 34%
d. 84% |
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Term
given: mean = 800 and standard deviation = 120
1. 50% of the data is above what number?
2. Find the probability of getting a value between 560 and 920?
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Definition
1. a) 560
b) 680
c) 720
d) 800
2. a) 81.5%
b) 68%
c) 95%
d) 47.5% |
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Term
given mean = 75; standard deviation = 5
1. What percent of the data is between 60 and 75?
2. find P(70 < x < 80)
3. find P(65 < x < 85)
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Definition
1. a. 49.85% b. 50% c. 68% d. 95%
2. a. 47.5% b. 68% c. 95% d. 99.7%
3. a. 68% b. 84% c. 95% d. 99.7% |
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Term
Given mean = 12; standard deviation = 3
1. There is a 99.7% chance of choosing a value between what two numbers?
2. Find P(x > 18)
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Definition
1. a) between 12 and 15
b) between 3 and 21
c) between 6 and 18
d) between 9 and 15
2. a) 0.15%
b) 2.5%
c) 16%
d) 97.5% |
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Term
given: mean = 400; standard deviation = 25
find the probability of getting a value
1. between 325 and 425
2. at most 450
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Definition
1. a) 34%
b) 68%
c) 95%
d) 83.85%
2. a) 2.5%
b) 16%
c) 84%
d) 97.5% |
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Term
Which statements are true about a random sample of a population?
1. A random sample will have exactly the same mean as the population mean.
2. The means of random samples will vary.
3. A large sample will likely be closer to the population mean than a small sample.
4. The means of random samples will have a larger standard deviation than the population itself. |
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Definition
a) 1 & 2
b) 3 and 4
c) 2 and 4
d) 3 only
e) 2 and 3
f) all of the statements are true |
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