Which histogram depicts a higher standard deviation?
0
2
4
6
8
10
Frequency
30
40
50
60
70

A histogram has a horizontal axis labeled from 30 to 70 plus in increments of 10 and a vertical axis labeled “Frequency” from 0 to 10 in increments of 1. Nine vertical bars of class width 5 extend from the horizontal axis and have heights as follows: 30 to 35, 1; 35 to 40, 3; 40 to 45, 3; 45 to 50, 6; 50 to 55, 9; 55 to 60, 8; 60 to 65, 5; 65 to 70, 3; 70 to 72, 2.
0
2
4
6
8
10
Frequency
40
44
48
52
56
60

Suppose a ball is dropped fromca height of 6ft. it bounces back up but time it bounces, it reaches only 7/10 of its pervious height. what is the total of each height that the ball reaches after 5 bounces

Which expressions are equivalent to -6 + 3m

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.