The time it takes a pizza delivery driver to reach his destination for a sample of 28 deliveries has a mean of 36 minutes. The standard deviation of those 28 deliveries is s = 2 minutes. Construct an 85% confidence interval to estimate the true mean of all his pizza deliveries. (35.440,36.560) (27.520,28.480) (35.259,36.741) (27.347,28.653)

According to a recent survey of 35 Canadians and 42 Americans it was found that Canadians drink a mean of 3.2 cups of coffee per day with a standard deviation of 1.1 cups, and Americans drink a mean of 3 cups of coffee per day with a standard deviation of 1.5 cups. Use this sample to test the claim that Canadians drink about the same amount of coffee as Americans using 99% confidence. **Let the first population be of the Canadians and the second population be of the Americans.** For the null and alternative hypothesis you may write words, don't spend a ton of time on symbols. The null hypothesis is   . The alternative hypothesis is    . If you use tables please complete the critical value and test statistic section, if you use a TI-84, please complete the p-value and alpha section. Leave the other sections blank. Critical value or values are    . If there is more than one answer, write them from smallest to largest and separate answers with a comma. Round to 2 decimal places. The test…