Answer:
Mean value is 0 and standard deviation is 1 after all test scores have been standardized by converting them to z-scores using z
Step-by-step explanation:
In a standard normal distribution (also called as Gaussian distribution) all values of the sample can be projected to a normal distribution with mean 0 and standard deviation 1 using their z-scores.
z-score of a value X can be calculated as follows:
z= where
50 is the mean of the test scores
6 is the standard deviation of test scores
Answer:
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
Read more on Brainly.com - https://brainly.com/question/13771780#readmore
