Twenty members of a health club who jog were asked how many miles they jog per week. the responses are to the right. construct a stem-and-leaf display. for single digit data, use a stem of o complete the stem-and-leaf display. 2 21 16 6 18 (use ascending order.) enter your answer in each of the answer boxes save for later

Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.

Divide. –40 ÷ –5 a –8 b 200 c -200 d 8

Pleting the square f the given find the x-intercepts of the parabola with vertex (-5,13) and y-intercept (0, 12). write your answer in this form: (14,.99). if necessary, round to the nearest hundredth. *- h enter the correct answer, de verter, and ametry 00000 done doo