Patience while we update our system. BIG IDEAS MATH
ELIZABETH HELMER
a
#20i
DIG DEEPER! The expression p - 15 gives the amount (in dollars) you pay after using the coupon when the original amount
of a purchase is p dollars. The expression 30 + 6n gives the amount of money (in dollars) you save after n weeks. A jacket
costs $78. Can you buy the jacket after 6 weeks?
i
Coupon
Good for $15 off any
purchase of $75 or more
You
buy the jacket after 6 weeks.
Explain.
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Overview

(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