Answer:
the answer will be 50 I think
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.
Step-by-step explanation:
We need to say that 
is equivalent to what.
We know that, (3)² = 9
So,
We can write 
And 
So,
So, is equivalent to 
.
Hence, this is the required solution.
Answer:
you need a ruler to measure to draw by using the measurements or number giving to you
Answer: The smaller piece is 750m long.
Step-by-step explanation:
let the smaller piece be x
so
150m + x + x = 1650
150 + 2x = 1650
or, 2x = 1500
so, x = 750 m
