The Department of Housing and Urban Development (HUD) would like to test the hypothesis that the average size of a newly constructed house last year is different from the average size of a newly constructed house in 2000
The following data summarizes the sample statistics for house sizes, in square feet, for both years. Assume that the population variances are equal. 2000 Last YearSample mean 2,290 2,460Sample size 18 18Sample standard deviation 250 260If Population 1 is defined as homes built in 2000 and Population 2 is defined as homes built last year, which one of the following statements is true?A) Because the 90% confidence interval does not include zero, HUD can conclude that the average size of a newly constructed house last year is not different from the average size of a newly constructed house in 2000.
B) Because the 90% confidence interval does not include zero, HUD can conclude that the average size of a newly constructed house last year is different from the average size of a newly constructed house in 2000.
C) Because the 90% confidence interval includes zero, HUD cannot conclude that the average size of a newly constructed house last year is different from the average size of a newly constructed house in 2000.
D) Because the 90% confidence interval includes zero, HUD can conclude that the average size of a newly constructed house last year is equal to the average size of a newly constructed house in 2000.
B
You might also like to view...
Following the model can make presentations much clearer
a. true b. false
McGrath’s model of how project groups operate over time proposes four types of functions:
a. Inception, problem solving, conflict resolution, execution b. Forming, storming, norming, performing c. Creation, development, diffusion, execution d. Investigation, maintenance, socialization, turnover
Choose the correct word or words in parentheses. The drill team (was, were) invited to march in the parade
Take action and remember that in most cases, it is better to hold out for a perfect solution later, rather than to implement a good solution now.
Answer the following statement true (T) or false (F)