During a bear market 140 Investors were asked how they were

During a bear market, 140 Investors were asked how they were adjusting their portfolios to protect themselves. Some of these investors were keeping most of their money in stocks, whereas others were shifting large amounts of money to bonds, real estate, or cash (such as money market accounts). The results of the survey are shown below. At 1% significance, test the hypothesis that the four choices are equally preferred among all investors. The following information is obtained from a sample. Assume the standard deviation of the population is known. n = 600 x = 1.24 sigma = 5.51 Construct a 9936 confidence interval for p. A sample of 15 one-pound jars of Fresh Bean coffee has a mean of 80 mg of caffeine per jar and a standard deviation of 5 mg. Another sample of 12 jars of Sunclams coffee had a mean of 77 mg of caffeine with a standard deviation of 6 mg. At 10% significance, test for a difference between the true average amounts of caffeine in one-pound jars of each brand\'s coffee.

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