Chapter Eight
In the following multiple choice questions, circle the correct answer.
1.
The absolute value of the difference between the point estimate and the
population parameter it estimates is the
a.
standard error
b.
sampling error
c.
precision
d.
error of confidence
e.
None of the above answers is correct.
ANSWER:
b
2.
The confidence associated with an interval estimate is called the
3.
A probability statement about the sampling error is known as the
4.
If we want to provide a 95% confidence interval for the mean of a population,
the confidence coefficient is
5.
As the number of degrees of freedom for a t distribution increases, the difference
between the t distribution and the standard normal distribution
a.
becomes larger
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Chapter Eight
b.
becomes smaller
c.
stays the same
d.
None of the above answers is correct.
ANSWER:
b
6.
For the interval estimation of
μ
when
σ
is known and the sample is large, the
proper distribution to use is
7.
The variance of a population is known to be 400.
At 95% confidence, the
margin of error will be
8.
An estimate of a population parameter that provides an interval of values
believed to contain the value of the parameter is known as the
9.
The difference between the point estimate, such as the sample mean, and the
value of the population parameter it estimates, such as the population mean, is
known as the
a.
confidence level
b.
sampling error
c.
parameter estimate
d.
interval estimate
e.
None of the above answers is correct.
ANSWER:
b
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 Spring '10
 BARCUS
 Normal Distribution, 1 degrees, σ, 90%, 9 hours, 2 degrees

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