PoPFli21
19.01.2021 •
Mathematics
The random variable X takes on the values of 2,5, n, and 15. The probability distribution of X is shown in the following table.
X
2
5
n
15
P(X)
0.1
0.4
0.2
0.3
The expected value of X is 9.1. What is the value of n ?
Solved
Show answers
More tips
- H Health and Medicine Discover the Hidden Principles and Real Results of the Japanese Diet...
- H Health and Medicine Understanding Pregnancy Tests: What You Need to Know?...
- H Health and Medicine What Makes a Man a Man?...
- C Computers and Internet How to Get Rid of Spam in ICQ?...
- A Art and Culture Who Said The Less We Love a Woman, the More She Likes Us ?...
- F Family and Home How to Get Rid of Your Neighbors?...
- S Society and Politics How Could Nobody Know About the Dead Mountaineers?...
- H Health and Medicine How to Cure Adenoids?...
- H Health and Medicine Why Wearing a Back Brace Can Be Beneficial During Back Strain?...
- S Sport When and Where Will the 2014 World Cup be Held?...
Answers on questions: Mathematics
- M Mathematics The state of Massachusetts charges a flat tax on adjusted income. In 2018, the flat tax rate was 5.1%. Which of the following equations finds the amount of income tax, t, based on...
- M Mathematics Can someone type a square using only a keyboard. No Emojis....
- M Mathematics Abby s friend told her that he drew a quadrilateral with exactly one pair of parallel sides. Abby said it must be a trapezoid. Is she correct...
- M Mathematics Solve by Elimination: 3x - 5y = -7 -4x + 7y = 8...
- M Mathematics Ed is a sophomore at Greenpoint College. Tuition this year cost $3,564 per semester, which is 10% less than it was last year. What was last year s tuition price?...
- M Mathematics A bag contains 12 red marbles, 10 green marbles, 2 yellow marbles, 19 blue marbles, and 9 purple marbles. What is the probability of pulling out a green marble?...
- M Mathematics Stephany is inviting 3 friends to a party. If each friend will get 7 cookies and each box has 10 cookies, how many boxes does Stephany need to get?...
- M Mathematics Given that \angle A∠A and \angle B∠B are complementary angles, and \sin A=.743sinA=.743, find \cos BcosB....
- M Mathematics Jo and Paul are arguing about percentages. Jo says 52% = 0.052 20 Paul says 52% Who is correct?...
- M Mathematics These prisms are similar. Find the surface area of the larger prism in decimal form, 5 m 7 m Surface Area = 90 m2 Surface Area = [?] m2...
Ответ:
3,2
Step-by-step explanation: