Points: 0 of 1 Save The monthly utility bills in a city are normally distributed, with a mean of $100 and a standard deviation of $13. Find the probability that a randomly selected utility bill is (a) less than $70. (b) between $85 and $120, and (c) more than $140 (a) The probability that a randomly selected utility bill is less than $70 is 0.0105 (Round to four decimal places as needed.) (b) The probability that a randomly selected utility bill is between $85 and $120 is (Round to four decimal places as needed.)

answer: a

step-by-step explanation:

10.2 units

whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.

answer: the answer is   graph (a)