Mathematics, 06.04.2020 15:46 Dylan5857

The distribution of weights of potato chip bags filled off a production line is unknown. However, the mean is m=13.35 OZs and the standard deviation is s=.1200 OZs. To check the quality of the potato chip bags, a random sample of n=36 bags is selected. Use `X to denote the sample mean.

1. The mean (or expected value) of the sample mean `X is:

a. 13.23
b. 13.00
c. 13.47
d. 13.50

2. The standard deviation of the sample mean `X is

a. 0.0200
b. 0.1200
c. 0.0600
d. 0.3600
e. none of the above

3. The probability that the sample mean `X is less than or equal to 13.38 OZs is closest to

a. 0.0668
b. 0.0998
c. 0.4332
d. 0.9332
e. none of the above

4. The probability that the sample mean `X is less than or equal to 13.32 OZs is closest to

a. 0.0668
b. 0.0998
c. 0.4332
d. 0.9332
e. none of the above

5. The probability that the sample mean `X is between 13.30 and 13.36 OZs is closest to

a. 0.0062
b. 0.3085
c. 0.6853
d. 0.4938
e. none of the above

Answers: 2

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