The mayor of a large city claims that the average net worth of families living in this city is at most $300,000. A random sample
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Answer:
0.6125
Step-by-step explanation:
We have,
P(ripe avocados) = 0.45 , n = 5
by binomial distribution,
P(x=k) =
P(2 ≤ x ≤ 3) = P(x=2) + P(x=3)
P(x=2) =
= 10 x (0.45)² x (0.55)³
= 0.3369
P(x=3) =
= 10 x (0.45)³ x (0.55)²
= 0.2756
So, P(2 ≤ x ≤ 3 ) = 0.3369 + 0.2756
= 0.6125