P(z<c)=0.8854 Find C

Answer 1

To find value of c when P(z<c)=0.8854, look up the z table to get the z score corresponding to the left area= 0.8854. This value is +1.20.

Alternatively, use InvNorm function on graphing calculator.

Press2nd-->VARS-->DISTR

select invNorm, plug in 0.8854 for probability, mean mu=0, standard deviation σ=1 to get the answer.