Question

anyone?

Answer 1

Do you know the definition of standard deviation? I had to look it up.

Answer 2

It is saying the difference between the mean avg number of mints in a package and the actual number squared is five right? So looking at the possible answers what would standard deviation have to be if we 100,000 packages for example..

Answer 3

One rule of thumb about standard deviation and a normal distribution is that the area under the curve between the mean - 1 std dev and the mean + 1 std dev is 68% of the population. That means that the area between mean - 1 std dev and the mean is 34% of the population.