It has been reported that the average monthly cell phone bill is $50. Assuming a normal distribution

Question:

It has been reported that the average monthly cell phone bill is $50. Assuming a normal and a standard deviation of $10, what is the probability that a randomly selected cell phone subscriber’s bill last month was less than $35? More than $70?
Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...