AnswersFL-1200330-Algebra 2 CRModeling with Exponential and Logarithmic Equations

Modeling with Exponential and Logarithmic Equations — Unit test Answers

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What is the approximate area of the shaded region under the standard normal curve below? Use the portion of the standard normal table given to help answer the question. zProbability0.000.50001.000.84132.000.97723.000.9987

Question illustration
A
0.02
B
0.14
C
0.34
D
0.84
2
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For a standard normal distribution, find the approximate value of . Use the portion of the standard normal table below to help answer the question.zProbability0.000.50000.220.58710.320.62550.420.66280.440.67000.640.73890.840.79951.000.8413

Question illustration
A
16%
B
34%
C
66%
D
84%
3

For a standard normal distribution, which of the following variables always equals 1?

A
Mu
Option A
B
Sigma
Option B
C
x
D
z
4

The times of the runners in a marathon are normally distributed, with a mean of 3 hours and 50 minutes and a standard deviation of 30 minutes. What is the probability that a randomly selected runner has a time less than or equal to 3 hours and 20 minutes? Use the portion of the standard normal table below to help answer the question.zProbability0.000.50000.500.69151.000.84132.000.97723.000.9987

A
16%
B
32%
C
34%
D
84%
5

Which of the following statements is equivalent to ?

Question illustration
A
P (z greater-than-or-equal-to negative 1.7)
Option A
B
1 minus P (z greater-than-or-equal-to negative 1.7)
Option B
C
P (z less-than-or-equal-to 1.7)
Option C
D
1 minus P (z less-than-or-equal-to 1.7)
Option D
6

What is the approximate area of the unshaded region under the standard normal curve below? Use the portion of the standard normal table given to help answer the question. z Probability0.000.50001.000.84132.000.97723.000.9987

Question illustration
A
0.14
B
0.16
C
0.86
D
0.98
7

For a standard normal distribution, find the approximate value of . Use the portion of the standard normal table below to help answer the question.zProbability0.000.50000.250.59871.000.84131.250.89441.500.93321.750.9599

Question illustration
A
11%
B
39%
C
61%
D
89%
8

Which of the following probabilities is equal to approximately 0.2957? Use the portion of the standard normal table below to help answer the question.zProbability0.000.50000.250.59870.500.69150.750.77341.000.84131.250.89441.500.93321.750.9599

A
P (negative 1.25 less-than-or-equal-to z less-than-or-equal-to 0.25)
Option A
B
P (negative 1.25 less-than-or-equal-to z less-than-or-equal-to 0.75)
Option B
C
P (0.25 less-than-or-equal-to z less-than-or-equal-to 1.25)
Option C
D
P (0.75 less-than-or-equal-to z less-than-or-equal-to 1.25)
Option D
9

What is the approximate area of the shaded region under the standard normal curve below? Use the portion of the standard normal table to help answer the question.zProbability0.000.50001.000.84132.000.97723.000.9987

Question illustration
A
0.16
B
0.68
C
0.82
D
0.84
10

What is the approximate area of the unshaded region under the standard normal curve below? Use the portion of the standard normal table given to help answer the question. z Probability0.000.50001.000.84132.000.97723.000.9987

Question illustration
A
0.02
B
0.16
C
0.18
D
0.82

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