Essay
A lathe is set to cut bars of steel into lengths of 6 centimeters.The lathe is considered to be in perfect adjustment if the average length of the bars it cuts is 6 centimeters.A sample of 121 bars is selected randomly and measured.It is determined that the average length of the bars in the sample is 6.08 centimeters with a standard deviation of .44 centimeters.
a.
Formulate the hypotheses to determine whether or not the lathe is in perfect adjustment.
b.
Compute the test statistic.
c.
Using the p-value approach, what is your conclusion? Let α = .05.
Correct Answer:
Verified
a.
H0: μ = 6 centimeters
Ha: μ...View Answer
Unlock this answer now
Get Access to more Verified Answers free of charge
Correct Answer:
Verified
a.
H0: μ = 6 centimeters
Ha: μ...
View Answer
Unlock this answer now
Get Access to more Verified Answers free of charge
Q13: Ahmadi, Inc., has been manufacturing small automobiles
Q16: An official of a large national union
Q17: An automobile manufacturer stated that it will
Q19: In the hypothesis testing procedure, α is
Q20: Consider the following hypothesis test:<br>H<sub>0</sub>: p <img
Q31: The p-value is a probability that measures
Q43: In a two-tailed hypothesis test situation, the
Q53: For a lower tail test, the test
Q60: A sample of 1400 items had 280
Q72: Read the t statistic from the t