1. In a given population 30% of the population choose going to theatre towatch moviesb. Use a suitable approximation to find the probability that out of 60 peopleselected at random 12,13,14 or 15 choose watching movies in theatres.

Proportion of people who choose going to theatre to watch movies is 0.30.Number of people is 60.The…

Answered: 1. In a given population 30% of the…

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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15 400 people were questioned as to whether they read novels in paperback form or on an e-reader. 20% said they do both. 30% said they read paperbacks. The probability that a person who didn't read paperbacks also didn't read on an e-reader was 25% a) Represent this information in the two-way table below Total Total b) Calculate the probability that a randomly selected person reads novels on an e-reader but not in paperback. c) Of those that read on e-readers, what percentage read in both formats? Give your answer correct to the nearest percent.
6. Three out of eight BS in Business Administration graduates are in banking industry. If 600 BS in Business Administration graduates are randomly selected, find the probability that 190 or less are in banking industry? Solution: nq =
1. Which of the folowing is a discrete random variable? a. the average amount of electricity consumed b. the of patients in a hospital c. the amount of paint used in repainting a building d.the average weight of female athlets
Assume that there are 4 white, 2 black and 3 red balls in a bowl. Two balls selected as randomly;a. If these selected balls assumed to be White and Black, what are the probabilities for all number of white and black ball pairsb. What is the general probability function for this experiment?c. What is marginal probability function for “white” balls?
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A gender-selection technique is designed to increase the likelihood that a baby will be a girl. In the results of the gender-selection technique, 962 births consisted of 490 baby girls and 472 baby boys. In analyzing these results, assume that boys and girls are equally likely. a. Find the probability of getting exactly 490 girls in 962 births. b. Find the probability of getting 490 or more girls in 962 births. If boys and girls are equally likely, is 490 girls in 962 births unusually high?
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3. A company produces boxes of candy that contain a mean of 50 candies each. The standard deviation is 2. Quality control will reject any box with fewer than 48 candies. a) What is the probability that a box selected at random contains exactly 51 pieces? b) What proportion of the boxes will quality control reject as containing too few candies? c) The company produces 135 000 boxes of candy a day. How many of these boxes will have at least 48 candies but no more than 53?
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1. In a given population 30% of the population choose going to theatre to watch movies b. Use a suitable approximation to find the probability that out of 60 peop selected at random 12,13,14 or 15 choose watching movies in theatres.