Question

1)Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Round your answer to four decimal places.)

μ = 4; σ = 6

P(1 ≤ x ≤ 13) =

2) Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Round your answer to four decimal places.)

μ = 2.7; σ = 0.39

P(x ≥ 2)

Answer 1

​​​​​​From given table you can find another probability

e.g. if you want to find the P(z<1.96). You can find it

First see the 1.9 in first column, cross these row

Then see the 0.06 in first row, cross the corresponding column

See where these two lines intersect, this is your probability

i.e p(z<1.96)=0.4750