Question 2: A lighting fixtures store sells four brand of LED lighting bulbs which are typically available in one of two main color temperatures; warm white (WW) and cool white (CW). The lamps are placed in four boxes named A, B, C, and D. Each box includes 30 bulbs. The number of warm white (WW) color temperature lambs in each box are given as 12, 18, 24, and 12 respectively. Long terms statistics of this store shows that the probabilities of brand selection are P(A)=0.25, P(B)=0.30, P(C)=0.25, and P(D)=0.20 respectively. Let consider that a customer bough a bulb. a) What is probability that the color temperature of lamp is warm white? b) What is probability that the lamp emits light that the color temperature is cool white? c) If the bulb is warm white, what is the probability box B was selected?

Question 2: A lighting fixtures store sells four brand of LED lighting bulbs which are typically available in one of two main color temperatures; warm white (WW) and cool white (CW). The lamps are placed in four boxes named A, B, C, and D. Each box includes 30 bulbs. The number of warm white (WW) color temperature lambs in each box are given as 12, 18, 24, and 12 respectively. Long terms statistics of this store shows that the probabilities of brand selection are P(A)=0.25, P(B)=0.30, P(C)=0.25, and P(D)=0.20 respectively. Let consider that a customer bough a bulb. a) What is probability that the color temperature of lamp is warm white? b) What is probability that the lamp emits light that the color temperature is cool white? c) If the bulb is warm white, what is the probability box B was selected?

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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