Assume that the birth weights (in pounds) of babies born in Dallas area follow u

Question

Assume that the birth weights (in pounds) of babies born in Dallas area follow uniform distribution within the range of 0 pounds to 20 pounds. Babies are considered healthy if their birth weights are between 1 pounds and 19 pounds. Use this information to answer Questions 19 and 20 below. 19. We randomly select 30 babies. What is the probability that among 30 of these randomly selected babies, at least 20 of them are healthy? (a) Binom.dist(20,30, 0.9,0) (b) 1 - Binom.dist(19,30, 0.9,1) (c) Binom.dist(30,20, 0.9,1) (d) 1 - Binom.dist(20,30, 0.95,1) UESTION 20 20. We randomly select 30 babies. O n average how many of them will be healthy? (a) 21 (b) 24 (c) 27 (d) 30

Explanation / Answer

Q19) Option B is Correct.

We should use 1-BINOM.DIST(19,30,0.90,TRUE)

Q20) Average = 30*0.90 = 27

Option C is Correct

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