Used car problems. abc motors sold a used car to frank, who wrote a bad check for the car and left town but not before he sold the car to betty, who paid $1,100 (a fair price for the car) believing that frank had all rights to sell it. abc motors asked frank to return the car, but he told them that he already sold it to betty. what kind of title did frank have?

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.