Assign your numbers for mean μ and standard deviation σ.
Then select one number "a" bellow μ and one number "b" above μ.
Choose these numbers not far from μ so we can use z.
Find probability that x is between a and b: P(a < x < b)
Then select one number "a" bellow μ and one number "b" above μ.
Choose these numbers not far from μ so we can use z.
Find probability that x is between a and b: P(a < x < b)