View the step-by-step solution to:

Consider the probability distribution below x. F(x) 10.2 20 .3 30 .4 40 .1 the variance of x equals a. 85 b 93.33 c 84 d.

Consider the probability distribution below

x. F(x)

10. .2

20 .3

30 .4

40 .1

the variance of x equals

a. 85

b 93.33

c 84

d. 9.165

Top Answer

The answer to this question... View the full answer

2 comments
  • I get the first part and second part. When I get to 100 times zero point two I get lost
    • rekennaclay
    • Oct 01, 2018 at 8:13pm
  • There we are finding the variance, square each x value then multiply by the respective probabilities,
    • Dinoco12
    • Oct 01, 2018 at 8:27pm

Sign up to view the full answer

Other Answers

The solution is... View the full answer

8 comments
  • Can you break this down for me more please. I didn't get the right answer when I tried it
    • rekennaclay
    • Oct 01, 2018 at 7:33pm
  • I got 904.7
    • rekennaclay
    • Oct 01, 2018 at 7:33pm
  • please let me know which part because it just need to put in calculator
    • SumitK21
    • Oct 01, 2018 at 7:36pm
  • 10^2 *0.2 =20 and 20^2*0.3 =120 and 30^2*0.4=360 and 40^2*0.1=160 and 24^2 =576
    • SumitK21
    • Oct 01, 2018 at 7:38pm
  • [20 + 120 + 360 + 160 ] - 576= 660 - 576 = 84
    • SumitK21
    • Oct 01, 2018 at 7:38pm
  • The second part I put it in the calculator and ended with a different answer. The variance part.
    • rekennaclay
    • Oct 01, 2018 at 7:43pm
  • i have broken every number, please check and let me know
    • SumitK21
    • Oct 01, 2018 at 7:48pm
  • Okay thanks
    • rekennaclay
    • Oct 01, 2018 at 7:49pm

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
  • -

    Question & Answers

    Get one-on-one homework help from our expert tutors—available online 24/7. Ask your own questions or browse existing Q&A threads. Satisfaction guaranteed!

    Ask a Question
Ask a homework question - tutors are online