Answer in Statistics and Probability for Chakaso Hassan #82015

Question #82015

Given that 51.3% of all newly born children are boys;then what is the probability that in a sample of 5 newly born children;exactly 3 are boys

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Answer on Question #82015 — Math — Statistics and Probability

Question

Given that $51.3\%$ of all newly born children are boys; then what is the probability that in a sample of 5 newly born children; exactly 3 are boys.

Solution

P = C(3, 5) * 0.513^3 * (1 - 0.513)^2 = \frac{5!}{3!(5-3)!} 0.513^3 \cdot 0.487^2 = 10 * 0.135 * 0.237 = 0.32

Answer: $p = 0.32$ .

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15.10.18, 22:19

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15.10.18, 21:21

Given the following equations for a certain economy: Y = C + I + G + X (Income identity) C =100 +0.9Yd (Consumption function) I = 200 –500r (Investment function) X = 100 – 0.12Y –500r (Net export) G = 200 (Government purchases) T = 0.2 (Tax rate) L = Y-100r (Real money demand) M = 800 (Real money supply). Derive equations for IS and LM curves . Determine the r and y pair at which the two markets are clearing iii) Compute the values of C, I, X and L