Answer Happy

The monthly utility bills in a city are normally distributed, with a mean of $100 and a standard deviation of $14. Find the probability that a randomly selected utility bill is (a) less than $66. (b) between $82 and $100, and (c) more than $130. (a) The probability that a randomly selected utility bill is less than $66 is 0.0075 (Round to four decimal places as needed.) (b) The probability that a randomly selected utility bill is between $82 and $100 is (Round to four decimal places as needed.) (c) The probability that a randomly selected utility bill is more than $130 is (Round to four decimal places as needed.)
Find the indicated area under the standard normal curve. Between z= -0.77 and z=0.77 Click here to view page 1 of the standard normal table. Click here to view page 2 of the standard normal table. The area between z= -0.77 and z=0.77 under the standard normal curve is (Round to four decimal places as needed.)