Question: please show work and formulas I cant figure these out The monthly utility bills in a city are normally distributed, with a mean of $1

please show work and formulas I cant figure these out

The monthly utility bills in a city are normally distributed, with a mean of $1 00 and a standard deviation of $12. Find the probability that a randomly selected utility bill is {a} less than $67, {b} between $4 and $100, and {c} more than $110. {a} The probability that a randomly selected utility bill is less than $57 is I]. [Round to four decimal places as needed.)

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