In an auditorium,10,200 people were seated in 12 rows. Find number of people in each row.

850 people

Step-by-step explanation:

10,200 people in 12 rows

÷ 12 on both sides:

people in rows

people in row.

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0