Question about Standard Normal Distribution (Finding probability)

#1
Suppose Z is a random variable having the standard normal distribution.

1)Find the probability that Z is between 0 and (1.08 + R/10)

2)P(–w < Z < w) = 0.8942 - R/50, Find the values of w


My Answer:
P(0<Z<1.08+R/10)
=P(Z<(1.08-0)/1)
=P(Z<1.08)
=0.5+0.3599
=0.8599

is this correct?
 
Last edited:

Martingale

TS Contributor
#2
1) what is R?

2) your answer cannot be correct (no matter what the value of R is)

Suppose Z is a random variable having the standard normal distribution.

1)Find the probability that Z is between 0 and (1.08 + R/10)

2)P(–w < Z < w) = 0.8942 - R/50, Find the values of w


My Answer:
P(0<Z<1.08+R/10)
=P(Z<(1.08-0)/1)
=P(Z<1.08)
=0.5+0.3599
=0.8599

is this correct?