Mr. Rob O'Leary owns 17.6 percent of the existing shares of stock in Dyna Corp. The corporation is presently issuing new stock. Before the stock is offered to other investors, Mr. O'Leary buys 17.6 percent of the new shares to maintain his share of ownership in the company. By doing so, Mr. O'Leary is exercising his .

The average u.s. household has $178,600 in life insurance. the standard deviation is $25,500. a local insurance agent would like to see how households in his city compare to the national average, and selects a simple random sample of 30 households from the city. for the households in the city, the average amount of life insurance is $188,800. a. based on the sample results, construct a 95% confidence interval for the true average amount of life insurance for households in the city. b. test the h0 : $178,600 ? ? to determine if the city's sample average is significantly different from the u.s. average amount of life insurance per household. use the conventional levels of significance.