normal distribution with µ= 500 and s= 100 .

Question

Scores on the SAT form a normal distribution with

µ= 500 and

s=

100

.

a) What is the minimum score necessary to be in the top 20% of the SAT distribution?

Answer 1

Hi Eddie Z.,

You've asked 4 questions at the same time on essentially the same topic and requiring the same skills to solve. That's spamming; we're not here to solve your entire problem sets for you. Please cut your questions down to one (the hardest, perhaps?) and someone will undoubtedly help you!

-- Cheers, --Mr. d.