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QUESTION 1 The total area under the normal curve can never be known a. TRUE b....

QUESTION 1



The total area under the normal curve can never be known

a.

TRUE

b.

FALSE

QUESTION 2



If a population is known to be normally distributed, the shape of the corresponding x-bar curve will be

a.

exactly normal

b.

approximately normal

c.

Non-normal

d.

depends on the sample size

QUESTION 3



The fact that values such as sample averages and sample proportions will be different from sample to sample is an example of

a.

standard deviation

b.

population proportions

c.

sampling variability

d.

sampling distributions

QUESTION 4



A sample average is useful because it is identical to the population average

a.

TRUE

b.

FALSE
math   Statistics-And-Probability   
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Answer #1

Answer - 1: This is False as the total area is always 1.

Answer - 2: Option A

Answer - 3: Option C

Answer - 4: False

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