Solutions: Quiz, Day 32: Use your own paper.
Put your name on the paper, show your work, label the two numbers that
are your answers. Fold it and hand it forward when you are
finished.
The population has mean 400 and standard deviation
128.
You take a simple random sample of size 16. The
distribution of
all possible sample means from such samples has
mean _ 400, same as population mean and standard deviation_32, population s.d. 128
divided by the square root of the sample size. Square root of 16
is 4. 128/4 = 32.