AnswersAlgebra D E-Learning Fall 2023 and beyondIntroduction to Normal Distributions

Introduction to Normal Distributions Answers

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Answer:

8

3

16%26%73%98%

A
16%
B
26%
C
73%
D
98%
4

1.251.52.5

A
1.25
B
1.5
C
2.5
5

P(z > –2.1)1–P(z 2.1)

A
P(z > –2.1)
B
1–P(z < 2.1)
C
P(z < 2.1)
D
1–P(z > 2.1)
6

Which statement represents the percent of American adults with total cholesterol scores in the borderline-high range?

A
Option
B
Option
C
Option
D
Option
7

The life of a certain brand of battery is normally distributed, with mean 128 hours and standard deviation 16 hours. What is the probability that a battery you buy lasts at most 100 hours? Standardize the variable.x = 100 is equivalent to z = –0.570.57–1.751.75.

A
–0.57
B
0.57
C
–1.75
D
1.75
8

11%40%60%89%

A
11%
B
40%
C
60%
D
89%
9

0.01790.58320.98211

A
0.0179
B
0.5832
C
0.9821
D
1
10

Using the standard normal table, about what percent of American adults have borderline-high cholesterol levels?5%35%40%90%

A
5%
B
35%
C
40%
D
90%
11

Question text not available

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Option
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12

The probability that a battery you buy lasts at most 100 hours is about 4%16%84%96%.

A
4%
B
16%
C
84%
D
96%

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