1. The total area under the curve of thestandard normal distribution is not nece
ID: 2951360 • Letter: 1
Question
1. The total area under the curve of thestandard normal distribution is not necessarily 1.0.
Points: 2
A) True
B) False
2. The area to the right of z = 1.52 is0.4357.
Points: 2
A) True
B) False
3 The distribution that has a mean of zero anda standard deviation of one is called the
Points: 2
A) binomial probability distribution.
B) frequency distribution.
C) standard normal distribution.
D) uniform distribution.
4. In which of the following binomialdistributions is the normal approximation appropriate?
Points: 2
A) n = 50, p = 0.01
B) n = 500, p = 0.001
C) n = 100, p = 0.05
D) n = 50, p = 0.02
5. A normal distributed population has amean of 250 pounds and a standard deviation of 10 pounds. Given n =20, what is the probability that this sample will have a mean valuebetween 245 and 255 pounds?
Points: 2
A) 0.9750
B) 0.4875
C) 0.3830
D) 0.0876
6. Fnd the area under the standard normal curve to the left of z =1.93.
Points: 4
Explanation / Answer
1) B)False statement. 2)B)false 3)C) standard normal distribution 4)C)np>=5=100(0.05) 5)A)0.9750 6)P(ZRelated Questions
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