SOLUTION: Given standardized normal distribution(with a mean of 0 and a standard deviation of 1) what is the probability that a. z is less than 1.08? b z is greater then -0.21? c. z is

Question 1166121: Given standardized normal distribution(with a mean of 0 and a standard deviation of 1) what is the probability that
a. z is less than 1.08?
b z is greater then -0.21?
c. z is less than -0.21 or greater than the mean?
d. z is is less than -0.21 or greater than 1.08?
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
use table or calculator
z<1.08 is prob. 0.8599
greater than -0.21 has probability 0.5832
less than -0.21 has probability 1-0.5832 or 0.4168
greater than the mean has prob. 0.50. The two are mutually exclusive, so there is no double counting.
So the answer is their sum or 0.9168.
less than -0.21 is prob. 0.4168
greater than 1.08 has prob. 0.1401, the complement of the first one above.
The either or has a probability of their sum or 0.5569
RELATED QUESTIONS
given a standardized normal distribution (with a mean of zero and a standard deviation of (answered by ewatrrr)

ACT scores for each section are standardized so scores follow an approximately normal... (answered by ewatrrr)

The distribution of certain test scores is a nonstandard normal distribution with a mean... (answered by stanbon)

The scores for the mathematics portion of a standardized test are normally distributed... (answered by VFBundy)

A)If a normal distribution has a mean of 343.11 and standard deviation of 110.24, what is (answered by Boreal)

How do I solve these questions manually (i.e. using the standardised normal distribution... (answered by Theo)

For a standard normal distribution with mean of 0 and standard deviation of 1, what is... (answered by stanbon)

What is the z-score for a normal distribution that has a mean of 100 a standard... (answered by jim_thompson5910)

Please help me solve: Suppose that x=time to complete a standardized test has a normal... (answered by stanbon)