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An experimenter is interested in the hypothesis testing problem
The null hypothesis is rejected when
The null hypothesis is rejected when
The null hypothesis is rejected when
The null hypothesis is rejected when
The null hypothesis is rejected when
The null hypothesis is rejected when
A machine is set to cut metal plates to a length of 80 mm.
The length of a random sample of 19 metal plates have a sample mean of
= 79.989 mm and a sample standard
deviation of
= 0.161 mm.
Is there any evidence that the machine is miscalibrated?
Use the significance level
,
and find the correct statement.
(
)
= 0.298 is
less
than 1.33,
the null hypothesis
cannot
be rejected in favor of the alternative hypothesis
.
Thus, the evidence of miscalibration is statistically
not significant .
(
)
= 0.298 is
less
than 1.734,
the null hypothesis
can
be rejected in favor of the alternative hypothesis
.
Thus, the evidence of miscalibration is statistically
significant .
(
)
= 0.298 is
less
than 1.734,
the null hypothesis
cannot
be rejected in favor of the alternative hypothesis
.
Thus, the evidence of miscalibration is statistically
not significant .
An experimenter is interested in the hypothesis testing problem
The null hypothesis is rejected when
The null hypothesis is rejected when
The null hypothesis is rejected when
The null hypothesis is rejected when
The null hypothesis is rejected when
The null hypothesis is rejected when
A sample of 10 observations has a sample mean
and a sample standard deviation
.
Find a 99% two-sided confidence interval for the population mean.
3
3
An experimenter is interested in the hypothesis testing problem
Since
(
)
= 5.822 is
greater
than 1.345,
the null hypothesis
cannot
be rejected.
Since
(
)
= 5.822 is
greater
than 1.761,
the null hypothesis
can
be rejected.
Since
(
)
= 5.822 is
greater
than 1.761,
the null hypothesis
cannot
be rejected.
Since
(
)
= 5.625 is
greater
than 1.345,
the null hypothesis
can
be rejected.
Since
(
)
= 5.822 is
greater
than 1.345,
the null hypothesis
can
be rejected.
Since
(
)
= 5.625 is
greater
than 1.345,
the null hypothesis
cannot
be rejected.