SOLUTION: Consider the hypothesis test given by
H0 :µ= 530
H1:µ< 530
In a random sample of 225 subjects, the sample mean is found to be
xbar 525 . Also, the population standar
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-> SOLUTION: Consider the hypothesis test given by
H0 :µ= 530
H1:µ< 530
In a random sample of 225 subjects, the sample mean is found to be
xbar 525 . Also, the population standar
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In a random sample of 225 subjects, the sample mean is found to be
xbar 525 . Also, the population standard deviation is ( 25 ).
(a) Determine the test statistic. Show all work; writing the correct test statistic, without supporting work, will receive no credit.
(b) Determine the P-value for this test. Show all work; writing the correct P-value, without supporting work, will receive no credit.
(c) Is there sufficient evidence to justify the rejection of
H0 at the (alfa 0.01) level? Explain Answer by reviewermath(1029) (Show Source):
You can put this solution on YOUR website! H0 :µ= 530
H1:µ< 530
In a random sample of 225 subjects, the sample mean is found to be
xbar 525 . Also, the population standard deviation is ( 25 ).
(a) Determine the test statistic. Show all work; writing the correct test statistic, without supporting work, will receive no credit.
The test statistic is =(525-530)/(25/SQRT(225)) =
(b) Determine the P-value for this test. Show all work; writing the correct P-value, without supporting work, will receive no credit.
To get the P-value, enter the following formula in Excel:
=NORMSDIST(-3)
The answer is
(c) Is there sufficient evidence to justify the rejection of
H0 at the (alpha 0.01) level? Explain
Answer: Since the p-value is less than alpha level, there is sufficient evidence to justify the rejection of .
