1.) Suppose the middle bulk of a new seed built in a convinced county in 2010 was 2,272 balance feet. A wild scantling of 25 new settlements built in this county was selected in 2014. The middle balance footage was 2,190, after a while a scantling measure hiatus of 225 balance feet.
a. Using a=0.02, does this scantling agree ample indication to close that the middle seed bulk of a new settlement in the county has newfangled gone 2010?
b. Estimate the p-value for this examination using Table 5 Appendix A strong.
c. Determine the formal p-value for this examination using yield.
d. Use PHStat to validate these results.
2. Consumers after a while reputation chargess beneath 600 accept a very involved space getting common for car or hypothecation loans. In 2012, 24% of Americans had a reputation charges beneath 600. Due to the new financial contingency, the federal legislation is resthither that this symmetry has increased. To examination this theory, a wild scantling of 250 Americans was chosen in 2014. From this scantling, 67 fellow-creatures had reputation chargess hither than 600. Using a = 0.10, exculpation the aftercited beneath:
a. Does this scantling agree livelihood for the legislation's interest that the symmetry of Americans after a while reputation chargess beneath 600 has increased gone 2012?
b. Determine the p-value for this examination.
c. Verify your results using PHStat.