A manufacturer must test that his bolts are 1.00cm long when they come off the assembly line. He must recalibrate his ma
Posted: Mon May 09, 2022 12:56 pm
A manufacturer must test that his bolts are 1.00cm long when
they come off the assembly line. He must recalibrate his machines
if the bolts are too long or too short. After sampling 49 randomly
selected bolts off the assembly line, he calculates the sample mean
to be 1.08cm. He knows that the population standard deviation is
0.26cm. Assuming a level of significance of 0.01, is there
sufficient evidence to show that the manufacturer needs to
recalibrate the machines?
Step 2 of 3: Compute the value of the test statistic. Round your
answer to two decimal places.
Step 3 of 3: Draw a conclusion and interpret the decision.
they come off the assembly line. He must recalibrate his machines
if the bolts are too long or too short. After sampling 49 randomly
selected bolts off the assembly line, he calculates the sample mean
to be 1.08cm. He knows that the population standard deviation is
0.26cm. Assuming a level of significance of 0.01, is there
sufficient evidence to show that the manufacturer needs to
recalibrate the machines?
Step 2 of 3: Compute the value of the test statistic. Round your
answer to two decimal places.
Step 3 of 3: Draw a conclusion and interpret the decision.