75 fihbfdkhbskdj bidsh d9u dissregard that it had to be 20 characters sooooooooooo
Step-by-step explanation:
see this bro May this help you
Let X be the iq score of adults. X is normally distributed with mean of 100 and standard deviation of 20.
If all iq scores are converted to z -scores then we will get z scores. And the z score is standard normal variable with mean=0 and standard deviation =1
Hence the mean and standard deviation of of all z scores will be 0 and 1 respectively.
Answer:
7
Step-by-step explanation:
(3x7)+4=25