A textile company is interested in knowing if there is a difference in the breaking strength of four different kinds of thread. Test whether there is a significant difference in mean breaking strength of the four kinds of thread. Calculate the test statistic.
F =
Set up the rejection region for = 0.05.
The rejection region is .
What conclusion can be drawn?

of the mean breaking strengths of the four kinds of threads is significantly different from the others.
Find the approximate p-value.
CI = Enter (n1, n2)
Find a 90% confidence interval for .
CI = Enter (n1, n2)

Question

A textile company is interested in knowing if there is a difference in the breaking strength of four different kinds of thread.

Test whether there is a significant difference in mean breaking strength of the four kinds of thread. Calculate the test statistic.
F = ______________
Set up the rejection region for

= 0.05.
The rejection region is ______________.
What conclusion can be drawn?
______________
______________ of the mean breaking strengths of the four kinds of threads is significantly different from the others.
Find the approximate p-value.
CI = ______________ Enter (n1, n2)
Find a 90% confidence interval for

.
CI = ______________ Enter (n1, n2)

Aleyssa De Jesus · Accepted Answer

Final Answer : 4.118; 3.24; Reject the null hypothesis; At least one; (0.010, 0.025); (-2.02, 0.78)

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