a box contains 5 white balls and 6 black balls. Two ball are drawn out at random. What is the probability that they are both white

0 and 1

Step-by-step explanation:

Given that,

The distribution of certain test score is non- standard normal distribution with mean 50 and  a standard deviation of 6.

we know that the

standard normal deviation has mean 0 and standard deviation 1.

So, All test scores have been standardized by converting them to z score.

mean = 0 and standard deviation= 1