Question

Find the probability that a normal variable takes values more than 4/5 standard deviations away from its mean. Round to 4 decimal places.

Answer 1

Is this question asking what is the probability that a value will be outside the range of +- 4/5 deviations?

Answer 2

i think just +4/5 deviations from the mean

Answer 3

Ok

Do you know how to find the probability of a value being below the +4/5 std dev?

Answer 4

no i have no clue for this one!

Answer 5

Do you have a t-table or a z-table?

Answer 6

yeah i have a z table up right now