View the step-by-step solution to:

# QUESTION 1 A sample 01 2,500 people was asked how many cups of eoee they drink in he morning. You are given the following sample iniermation. _ Cu...

My understanding is that these are discrete random variables and we need to calculate variance. I would like to use my TI-30XAiis to speed up the process, which we allowed during test, but you can't put in those high frequencies in STAT mode. I get an error.

I know that the Expected value is E(X)=Mean

And Variance is the sum of (X-Mean)^2/n

I can times the frequencies across, but isn't there any faster way to calculate? Not much time on the test when these come up.

So we are allowed to practice these quizzes as many as times as we want to prepare the test. Values change every time.

QUESTION 1 A sample 01 2,500 people was asked how many cups of eoﬁee they drink in he morning. You are given the following sample iniermation. _ Cu quoﬁP-e
__—— The variance of the number of cups of coffee is
Q ‘1
Q .96
O 2.4
O .9793

Let me explain the... View the full answer

### Why Join Course Hero?

Course Hero has all the homework and study help you need to succeed! We’ve got course-specific notes, study guides, and practice tests along with expert tutors.

### -

Educational Resources
• ### -

Study Documents

Find the best study resources around, tagged to your specific courses. Share your own to gain free Course Hero access.

Browse Documents