The calibration of a scale is to be checked by weighing a 11 kg test specimen...
The calibration of a scale is to be checked by weighing a 11 kg test specimen 25 times. Suppose that the results of different weighings are independent of one another and that the weight on each trial is normally distributed with σ = 0.200 kg. Let μ denote the true average weight reading on the scale.
(b) With the sample mean itself as the test statistic, what is the P-value when x = 10.82?
(Round your answer to four decimal places.)
Homework Answers
Given the sample size 
and
sample mean 
, population standard deviation 
.
Here 
. Since the population standard deviation is not known, we use
t-distribution.
The hypotheses are
The test statistic is
The p-value is
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The calibration of a scale is to be checked by weighing a 11 kg
test specimen...
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It is desired to check the calibration of a scale by weighing a
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a. Which of the three conclusions is best if
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