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...

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

$70,
between
$80
and
$110,
and more than

$120.

(a) The probability that a randomly selected utility bill is less than

$70

(Round to four decimal places as needed.)

(b) The probability that a randomly selected utility bill is between

$80
and
$110

$120

(Round to four decimal places as needed.)

Jun 03, 2022

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