A sample of 144 cans of coffee showed an average weight of 16 ounces. The standard deviation of the population is known to be 1.4 ounces
a. Construct a 68.26% confidence interval for the mean of the population.
b. Construct a 97% confidence interval for the mean of the population.
c. Discuss why the answers in Parts a and b are different.
a. 31.88 to 32.12
b. 31.75 to 32.25
c. As the level of confidence increases, the confidence interval becomes wider.
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Adya loaned $300 from Olga to buy a phone. He gave Olga the authority to sell his music system if he failed to pay her back $300. He failed to pay back the loan as promised. Under these circumstances, ________.
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