A teacher is monitoring how often students visit the website of the course during the day. She finds the following probability distribution. Find the expected number of visits to the course website.

visits (x) 0 1 2 3

probability 0.45 0.35 0.15 0.05

0.75

0.25

0.80

0.85

Question

Lillie Odom

Mathematics

13 September, 20:14

A teacher is monitoring how often students visit the website of the course during the day. She finds the following probability distribution. Find the expected number of visits to the course website.

visits (x) 0 1 2 3

probability 0.45 0.35 0.15 0.05

0.75

0.25

0.80

0.85

+1

Answers (1)

Know the Answer?

Jamie · Answer 1

Option C: 0.80

Step-by-step explanation:

Expected number of visits, E (x) = ∑xp (x)

∑ = Summation

x = visits

p (x) = probability of a number of visits

E (x) = (0*0.45) + (1*0.35) + (2*0.15) + (3*0.05)

E (x) = 0 + 0.35 + 0.30 + 0.15 = 0.80

A teacher is monitoring how often students visit the website of the course during the day. She finds the following probability distribution. Find the expected number of visits to the course website.visits (x) 0 1 2 3probability 0.45 0.35 0.15 0.050.750.250.800.85

A teacher is monitoring how often students visit the website of the course during the day. She finds the following probability distribution. Find the expected number of visits to the course website.

visits (x) 0 1 2 3

probability 0.45 0.35 0.15 0.05

0.75

0.25

0.80

0.85