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

Mathematics

Ashly Medina

6 May, 00:22

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

+3

Answers (1)

Know the Answer?

Hailie Lynch · 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