Question: According to the National Association of Home Builders 55 of
According to the National Association of Home Builders, 55% of new single-family homes built during 2005 had a fireplace. Suppose a nationwide homebuilder has claimed that its homes are “a cross section of America,” but a simple random sample of 600 of its single-family homes built during that year included only 50.0% that had a fireplace. Using the 0.05 level of significance in a two-tail test, examine whether the percentage of sample homes having a fireplace could have differed from 55% simply by chance. Determine and interpret the p-value for the test.
Answer to relevant QuestionsFollowing a major earthquake, the city engineer must determine whether the stadium is structurally sound for an upcoming athletic event. If the null hypothesis is “the stadium is structurally sound,” and the alternative ...It has been reported that 80% of taxpayers who are audited by the Internal Revenue Service end up paying more money in taxes. Assume that auditors are randomly assigned to cases, and that one of the ways the IRS oversees its ...What is an operating characteristic curve and how is it related to the power curve for a test? Plot the operating characteristic curve that corresponds to the power curve constructed for Exercise 10.86. In exercise 10.86 Using assumed true population percentages of 2%, 3%, 4%, 5%, 6%, and 7%, plot the power curve for ...A state transportation official claims that the mean waiting time at exit booths from a toll road near the capitol is no more than 0.40 minutes. For a sample of 35 motorists exiting the toll road, it was found that the mean ...
Post your question