Step-by-step explanation:
A.)10.965
byffdddooiy77
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.
It’s kinda hard to read repost it so we can get a clearer picture
Answer:
B) {3.75}
Step-by-step explanation:
Step 1: Make the 6 and 8 the sme thing by finding a number they both multiply towards. In this case it would be 8×3=24 and 6×4=24
Step 2: Multiply 5 by 3 since you multipliEd 8 by 3 so now you have 15/24.
Step 3: Divide the 15 by 4 since you multiplied 6 by 4 to get get 3.75
The only reason you made the 8 and the 6 the same was to see what you would divide 15 by. <u>Please give brainliest if I helped :)</u>