A machine produces pipes used in airplanes. The average length of the pipe is 16 inches. The acceptable variance for the length is 0.3 inch. A sample of 25 pipes was taken. The average length in the sample was 15.95 inches with a variance of 0.4 inch.
a. Construct a 95% confidence interval for the population variance.
b. State the null and alternative hypotheses to be tested.
c. Compute the
test statistic.
d. The null hypothesis is to be tested at the 5% level of significance. State the decision rule for the test.
e. What do you conclude about the population variance?
a. .2439 to .7741
b. H0: ?2 = .3
Ha: ?2 ? .3
c. 32
d. Do not reject H0 if 12.4011 < ?2 < 39.3641
Reject H0 if ?2 > 39.3641 or ?2 < 12.4011
e. Do not reject H0, there is not sufficient evidence to conclude that the population variance is unacceptable.
You might also like to view...
In a ________, two or more companies at the same channel level join together to develop a new marketing opportunity
A) franchise B) corporate VMS C) horizontal marketing system D) multiple distribution system E) conventional marketing system
Administrative law focuses on the laws governing which part of the government?
a. Congress b. Courts c. Administrative agencies d. President
Answer the following statements true (T) or false (F)
1. If the TEAM Act were passed, it would make it easier to form labor-management committees but present greater risks of employer dominated unions. 2. The TEAM Act is an example of legislation proposed that would "loosen" the NLRA by making it easier to form labor-management committees. 3. One of the key reasons advocates for transforming the NLRA give to justify their position is the culture of conflict or adversarialism that exists in the U.S. 4. The TEAM Act would have made it easier to form nonunion employee representation plans. 5. One proposed reform to the NLRA would allow for employee committees focused on monitoring employers' compliance with employment laws.
Universal-variable life combines the important characteristics of both universal life and variable life
Indicate whether the statement is true or false.