True, A dragonfly can fly up to 36 miles per hour.
Answer: True
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.
So, you should add the heighth twice and add the width twice too, then add those two together to get your answer.
