kaylintaylor12
contestada

x:       0    1     2      3     4
p(x): 0.1 0.6 0.05 0.15 0.1

Geraldine surveyed her school to find the number of siblings that they had. She created a probability distribution which is displayed in the table. What is the average number of siblings for students in the school?

A) 1 sibling
B) 1.5 siblings
C) 2 siblings
D) 2.5 siblings

Respuesta :

loathemuffin
The answer you are looking for is 1.5 siblings.
kjseconda
The answer is B) 1.5
To find the expected number of siblings, multiply each outcome by the probability of the outcome (0)(0.1) + (1)(0.6) + (2)(0.05) + (3)(0.15) + (4)(0.1) = 1.55 OR 1.5 siblings.

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