Steve repairs elevators. when he is called to a job he uses the stairwell to go to the floor which the elevator is located. in the modis building he climbs 22 steps for the 15 feet of horizontal travel. in the sears tower he climbs 17 steps for every 7 feet of horizontal travel. what is the rate of change for each stairwell?

What are the relative frequencies, to the nearest hundredth, of the rows of the two-way table? group 1: a 15 b 45 group 2: a 20 b 25

Rewrite the point-slope equation in slope-intercept form: y - 3 = 2(x + 4)

The survey of study habits and attitudes (ssha) is a psychological test that measures the motivation, attitude toward school, and study habits of students, scores range from 0 to 200. the mean score for u. s. college students is about 115, and the standard deviation is about 30. a teacher who suspects that older students have better attitudes toward school gives the ssha to 55 students who are at least 30 years of age. the mean score is 113.2. assume the population standard deviation is 30 for older students what is the margin of error for a 95% confidence interval for the population mean score for a. older students? b. compute the 95% confidence interval for the population mean score for older students. c. compute the 99% confidence interval for the population mean score for older students. d. compute the 88% confidence interval for the population mean score for older students.