Question 16A machine set to fill soup cans with a mean of 20 ounces and a standard deviation of 0.1 ounces.

A random sample of 28 cans has a mean of 20.04 ounces. Should the machine be reset?

A)Yes, the probability of this outcome at 0.983 would be considered unusual, so the machine should be reset

B)Yes, the probability of this outcome at 0.017, would be considered unusual, so the machine should be reset

C)No, the probability of this outcome at 0.017, would be considered usual, so there is no problem

D)No the probability of this outcome at 0.983 would be considered usual, so there is no problem

Question 17

The length of timber cuts are normally distributed with a mean of 95 inches and a standard deviation of 0.52 inches. In a random sample of 45 boards, what is the probability that the mean of the sample will be between 94.8 inches and 95.8 inches?

A)0.005

B)0.588

C)0.650

D)0.995

Question 18

The Dow Jones Industrial Average has had a mean gain of 432 pear year with a standard deviation of 722. A random sample of 40 years is selected. What is the probability that the mean gain for the sample was between 250 and 500?

A)0.331

B)0.863

C)0.669

D)0.137

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