Question

1. P (-1.98 is less than or equal to z less than or equal to 0.49)
Please help me on how to split this and solve...it's related to normal random variable.

Answer 1

\(\large P(-1.98 \le z \le 0.49) = P(z=0.49) - P(z=-1.98)\)

Answer 2

know how to interpret zscore tables ?

Answer 3

http://www.math.upenn.edu/~chhays/zscoretable.pdf

Answer 4

\(\large P(z=0.49) = 0.6879\)

\(\large P(z=-1.98) = 0.0239\)

Answer 5

subtract them both

Answer 6

thank you ganeshie8!!!

Answer 7

u wlc :)