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The Aluminum Association reports that the average American uses 56.8 pounds of aluminum in a year. A random sample of50households is monitored for one year

The Aluminum Association reports that the average American uses 56.8 pounds of aluminum in a year. A random sample of50households is monitored for one year to determine aluminum usage. If the population standard deviation of annual usage is12.2pounds, what is the probability that the sample mean will be each of the following?

Appendix A Statistical Tables

a.More than61pounds

b.More than57pounds

c.Between56and58pounds

d.Less than53pounds

e.Less than48pounds

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