Homework 07: Problem 7 Previous Problem Problem List Next Problem (1 point) Because of the relatively high interest rates, most consumers attempt to pay off their credit card bills promptly. However, this is not always possible. An analysis of the amount of interest paid monthly by a bank's Visa cardholders reveals that the amount is normally distributed with a mean of 27 dollars and a standard deviation of 8 dollars. A. What proportion of the bank's Visa cardholders pay more than 36.12 dollars in interest? Proportion = B. What proportion of the bank's Visa cardholders pay less than 41.88 dollars in interest? Proportion = C. What proportion of the bank's Visa cardholders pay less than 13 dollars in interest? Proportion = D. What interest payment is exceeded by only 17.62% of the bank's Visa cardholders? Interest Payment = Homework 07: Problem 8 Previous Problem Problem List Next Problem (1 point) The lifetime of lightbulbs that are advertised to last for 4300 hours are normally distributed with a mean of 4680 hours and a standard deviation of 200 hours. What is the probability that a bulb lasts longer than the advertised figure? Probability =