Let x represent the dollar amount spent on supermarket impulse buying in a 10 minute (unplanned) shopping interval Based on a Denver Post article, the mean of the x distribution is about $20 and the estimated standard deviation is about $7 (c) Let us assume that x has a distribution that is approxi...

a By the central limit theorem the sampling distribution of x is approximately normal with mean an ...

Let x represent the dollar amount spent on supermarket impulse buying in a 10-minute (unplanned) shopping interval.

Question:

Let x represent the dollar amount spent on supermarket impulse buying in a 10-minute (unplanned) shopping interval. Based on a Denver Post article, the mean of the x is about $20 and the estimated standard deviation is about $7.

(c) Let us assume that x has a distribution that is approximately normal. What is the probability that x is between $18 and $22?

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...