| Generating... |                     | quiz03_n21 |
A machine is set to cut metal plates to a length of less mm.
The length of a random sample of 2.492 metal plates have a sample mean of
= can mm and a sample standard
deviation of
= 0.538 mm.
Is there any evidence that the machine is miscalibrated?
Use the significance level
,
and find the correct statement.
(
less )
= 2.797 is
cannot
than 0.538,
the null hypothesis
0.6
be rejected in favor of the alternative hypothesis
.
Thus, the evidence of miscalibration is statistically
-1.281.
less
(
cannot )
= 0.538 is
0.6
than 0.0484,
the null hypothesis
-1.281
be rejected in favor of the alternative hypothesis
less .
Thus, the evidence of miscalibration is statistically
2.797.
can
(0.6)
= 0.1216 is
-1.255
than less ,
the null hypothesis
2.492
be rejected in favor of the alternative hypothesis
cannot .
Thus, the evidence of miscalibration is statistically
0.538.
An experimenter is interested in the hypothesis testing problem
Since
()
= is
than , the null hypothesis
be rejected.
Since
()
= is
than , the null hypothesis
be rejected.
Since
()
= is
than , the null hypothesis
be rejected.
Since
()
= is
than , the null hypothesis
be rejected.
Since
()
= is
than , the null hypothesis
be rejected.
Since
()
= is
than , the null hypothesis
be rejected.
A sample of observations has a sample mean
and a sample standard deviation
.
Find a % two-sided confidence interval for the population mean.
A consumer agency suspects that a pet food company may be underfilling
packages for one of its brands.
The package label states “ grams net weight,”
and the president of the company claims the average weight is greater
than the amount stated.
For a random sample of packages collected by the agency,
the sample mean of the weights is = grams
and the sample standard deviation is
= .
Use the significance level
,
and find the correct statement.
()
= is
than , the null hypothesis
be rejected in favor of the alternative hypothesis
.
Thus, the evidence for underfilling is statistically
.
()
= is
than , the null hypothesis
be rejected in favor of the alternative hypothesis
.
Thus, the evidence for underfilling is statistically
.
()
= is
than , the null hypothesis
be rejected in favor of the alternative hypothesis
.
Thus, the evidence for underfilling is statistically
.
()
= is
than , the null hypothesis
be rejected in favor of the alternative hypothesis
.
Thus, the evidence for underfilling is statistically
.
An experimenter is interested in the hypothesis testing problem
Since
()
= is
than , the null hypothesis
be rejected.
Since
()
= is
than , the null hypothesis
be rejected.
Since
()
= is
than , the null hypothesis
be rejected.
Since
()
= is
than , the null hypothesis
be rejected.
Since
()
= is
than , the null hypothesis
be rejected.
Since
()
= is
than , the null hypothesis
be rejected.