26. Handedness A psychologist needs 12 left-handed subjectsfor an experiment, and she interviews 15 potential subjects.About 10% of the population is left-handed.(a) What is the probability that exactly 12 of the potentialsubjects are left-handed?(b) What is the probability that 12 or more are left-handed?

Given, 10% of the population is left handed therefore P(left handed)=0.1 P(right handed)=1-P(left…

Answered: 26. Handedness A psychologist needs 12…

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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10.A hotel claims that 50% of its customers are very satisfied with its service. Answer the following questions based on a random sample of ten customers: What is the probability that exactly five customers are very satisfied? What is the probability that more than six customers are very satisfied? What is the probability that less than four customers are very satisfied?
What do you call the set of all possible outcomes in an experiment? a. Event b. Random Variables c. Sample Space
A recent study has shown that approximately 31.6% of Canadians are considered 'supertasters,' or people who experience the sense of taste with greater intensity than average. Consider a sample of 23 Canadians, each of whom are asked to indicate if they are a supertaster or not. Please use this information to answer the following questions.a. Suppose you know that at least 7 of the Canadians sampled are supertasters. What is the probability that exactly 15 of the Canadians sampled are supertasters?Answer:______________Round to at least FOUR digits after the decimal if necessary. b. What is the probability that the 10th Canadian sampled is the sixth person to indicate that they are a supertaster?Answer:______________Do NOT round your answer; give all the decimals.
How do I set this up?
5.Approximately 64% of the people murdered actually knew their murderer. Given 63 current unsolved murders, what is the probability that at least (equal to and more than) 35 victims knew their murderer?
A sample of 200 new cars were checked for defects. The following table shows the results of the study. Fewer than Six Defects Six or More Defects Total American Built 57 65 122 Foreign Built 36 42 78 Total 93 107 200 One car is selected at random. Round your answers to two decimals. (a) What is the probability a randomly selected car was American built? (b) What is the probability that a randomly selected car had fewer than six defects, given that it is foreign built? (c) What is the probability that a randomly selected car was American AND had six or more defects? (d) What is the probability that a randomly selected car was American OR had six or more defects?
12. A survey conducted discovered that 63% of all Americans are overweight. Suppose that a number of randomly selected Americans are weighed. The following table may (or may not) be useful: k 0 1 2 3 4 1 4 6 4 1 4Ck (a) Find the probability that the 4th person weighed is the first person to be overweight. (b) Find the probability that it takes less than 4 people to observe the first overweight person. (c) Find the expected value and variance of the number of Americans that would have to be weighed in order to find the first person that was overweight.
Mrs. Bukovac compiled the following table to compare the hand dominance of 200 Cleveland Heights High School students and what methods they prefer using to communicate with their friends. Communication method Cell phone/text In person Online 34 166 200 Total Hand Left-handed 12 13 domin ance Right-handed 43 72 51 Total 55 85 60 (a) If you choose a student at random, what is the probability they are left-handed, given that they communicate in person? (b) If you choose a student at random, are the events "left-handed" and "communicates by text" independent, based on the data above? Explain how you know.
A. When rolling 10 dice, what is the probability of rolling 7 sixes? How does this compare to the probability of rolling 7 dice with five or higher? Explain the difference. B. With two dice, what is the chance of rolling snake eyes (double 1's)? what is the chance of rolling doubles of any kind?
Coronary bypass surgery: A healthcare agency reported that 84% of poeple who had coronary bypass surgery in 2008 were over the age of 65. Fourteen coronary bypass patiens are sampled. (a) What is the probability that exactly 8 of them are over the age of 65?

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