During the winter of 2008-2009, the average utility bill for residents of a certain state was $181 per month. A random sample of 30 customers was selected during the winter of 2009-2010, and the average bill was foune to be $173.51 with a sample standard deviation of $18.91. Complete parts a and b below. a) Using a = 0.05, does this sample provide enough evidence to conclude that the average utility bill in this state was lower in the winter of 2009-2010 than it was in the winter of 2008-2009? Determine the hypotheses. O A. Ho: H= 181 and H,: H#181 O B. Ho: µ2 181 and H,:µ< 181 OC. Ho: Hs181 and H,:µ> 181 O D. Ho:H# 181 and H,: u= 181 Determine the critical value(s). The critical yalue(s) is(are) O

Suppose that the distribution of income in a certain tax bracket is approximately normal with a mean of $59,194.86 and a standard deviation of $4,454.165. Approximately 22.1% of households had an income greater than what dollar amount?   Question 5 options:   1)  55,770.4   2)  62,619.31   3)  15,312,273   4)  We do not have enough information to calculate the value.   5)  15,193,883

A survey found that women's heights are normally distributed with mean 63.6 in and standard deviation 2.3 in. A branch of the military requires women's heights to be between 58 in and 80 in. a. Find the percentage of women meeting the height requirement. Are many women being denied the opportunity to join this branch of the military because they are too short or too tall? b. If this branch of the military changes the height requirements so that all women are eligible except the shortest 1% and the tallest 2%, what are the new height requirements? Click to view page 1 of the table Click to view page 2 of the table. a. The percentage of women who meet the height requirement is %. (Round to two decimal places as needed.) Are many women being denied the opportunity to join this branch of the military because they are too short or too tall? O A. Yes, because the percentage of women who meet the height requirement is fairly large. OB. No, because the percentage of women who meet the height…

A survey found that women's heights are normally distributed with mean 63.4 in and standard deviation 2.5 in. A branch of the military requires women's heights to be between 58 in and 80 in. a. Find the percentage of women meeting the height requirement. Are many women being denied the opportunity to join this branch of the military because they are too short or too tall? b. If this branch of the military changes the height requirements so that all women are eligible except the shortest 1% and the tallest 2%, what are the new height requirements?

A survey found that women's heights are normally distributed with mean 63.8 in and standard deviation 2.4 in. A branch of the military requires women's heights to be between 58 in and 80 in. a. Find the percentage of women meeting the height requirement. Are many women being denied the opportunity to join this branch of the military because they are too short or too tall? b. If this branch of the military changes the height requirements so that all women are eligible except the shortest 1% and the tallest 2%, what are the new height requirements? Click to view page 1 of the table. Click to view page 2 of the table. 1%. a. The percentage of women who meet the height requirement is (Round to two decimal places as needed.) Are many women being denied the opportunity to join this branch of the military because they are too short or too tall? OA. Yes, because a large percentage of women are not allowed to join this branch of the military because of their height. OB. No, because the…

A survey found that​ women's heights are normally distributed with mean 63.96 in and standard deviation 2.2 in. A branch of the military requires​ women's heights to be between 58 in and 80 in. a. Find the percentage of women meeting the height requirement. Are many women being denied the opportunity to join this branch of the military because they are too short or too​ tall? b. If this branch of the military changes the height requirements so that all women are eligible except the shortest​ 1% and the tallest​ 2%, what are the new height​ requirements?