) A couple wants to buy a $30,000 car and can borrow the money for the purchase at 5%, paying it off in 3,
4 or 5 years. The table to the right gives the monthly payment and total cost of the purchase (including
the loan) for each of the payment plans. Suppose that when the payment is over t years, P(t) represents
the monthly payment and C(t) represents the total cost for the car loan. Use this information to answer
parts (a) through (d)

(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