A sample of 50 11th graders were asked to select a favorite pattern out of 6 choices. The data list below shows what their favorite color patterns were,
and the accompanying frequency table and bar graph represent these data. In
the bar graph, the height of the blue-gray bar is 4, the height of the green bar
is 9, and so on.
Color Pattern
Frequency
Blue on gray
4
Green
9
Pink polka dots
Purple
11
Red and orange
stripes
9
Yellow
Suppose that, rather than being just a bar graph, the display you see above is
a relative frequency bar graph. The vertical axis of the graph will be marked
off in percentages, from 0 percent up to 30 percent. What will be the height of
the green bar?
A. 25
C. 9

(co 3) the soup produced by a company has a salt level that is normally distributed with a mean of 5.4 grams and a standard deviation of 0.3 grams. the company takes readings of every 10th bar off the production line. the reading points are 5.8, 5.9, 4.9, 6.5, 5.0, 4.9, 6.2, 5.1, 5.7, 6.1. is the process in control or out of control and why? it is out of control as two of these data points are more than 2 standard deviations from the mean it is in control as the data points more than 2 standard deviations from the mean are far apart it is out of control as one of these data points is more than 3 standard deviations from the mean it is in control as the values jump above and below the mean