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:
graph 2
Step-by-step explanation:
Answer:
2: 67
3:67
4: 113
Step-by-step explanation:
Answer:
x=6
Step-by-step explanation:
