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Arte-miy333 [17]
3 years ago
9

A teacher is monitoring how often students visit the website of the course during the day. She finds the following probability d

istribution. 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
Mathematics
1 answer:
Eduardwww [97]3 years ago
7 0

Answer:

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

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▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ { \huge \mathfrak{Answer}}▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪

Given :

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