Answer:
(x, y) = (18/5, 16/5)
OR
(x, y) = (3.6, 3.2)
N = 20, the number of questions
p = 1/5 = 0.2, the probability of making a correct guess
q = 1 - p = 0.8, the probability of making an incorrect guess.
Expected success = 60% or 6 of 10.
From the binomial distribution,
P(6 of 10) = ₁₀C₆ p⁶q⁴
= 210*0.2⁶*0.8⁴ = 0.0055
Answer: 0.0055
Answer:
Step-by-step explanation:
abc
PR : RC = PQ : AC
so,
PQ = 2.8 inches
Hope this helps
