4.3 A survey of 500 adults found that 40% of them prefer coffee over tea. If a random sample of 20 adultsis taken,a) Suggest a suitable model to describe the number of adults X, who prefer coffee over tea. Justifyyour answerb) What is the probability at least 15 of them prefer coffee (rounded to four decimal places)?

Let X be the number of adults who prefer coffee over tea. The probability of adults who prefer…

Answered: 4.3 A survey of 500 adults found that…

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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suppose that 60% of all students currently enrolled at all California Community College campuses combined are female. Researchers want to do a survery, and randomly select 1000 students who are currently enrolled at CSU campuses. Let P represent the proportion of students in the sample who are female. h) use binocdf to find the probability between 56% and 64% are female. show calculator input
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The probability is 0.4 that a traffic fatality involves an intoxicated or alcohol-impaired driver or nonoccupant. In six traffic fatalities, find the probability that the number, Y, which involve an intoxicated or alcohol-impaired driver or nonoccupant is a. exactly three; at least three; at most three. b. between two and four, inclusive. c. Find and interpret the mean of the random variable Y. a. The probability that exactly three traffic fatalities involve an intoxicated or alcohol-impaired driver or nonoccupant is nothing. (Round to four decimal places as needed.) The probability that at least three traffic fatalities involve an intoxicated or alcohol-impaired driver or nonoccupant is nothing. (Round to four decimal places as needed.) The probability that at most three traffic fatalities involve an intoxicated or alcohol-impaired driver or nonoccupant is nothing. (Round to four decimal places as needed.) b. The probability that between two and four…
Section 4.1 Introduction to Probability Score: 4.67/15 4/15 answered Question 10 Giving a test to a group of students, the grades and gender are summarized below valuations A B Male 10 18 6. Female 9. 16 7 If one student was chosen at random, find the probability that the student was male. Probability = (Please enter a reduced fraction.) Submit Question ...jpg pic 16131095275...jpg pic_16131095275..jpg O Zoomday17bsp21.docx pic 1615670389...jpg 17 WX P N 吕口 F3 F4 F5 F2
The lifetimes of a certain brand of light bulbs are known to be normally distributed with a mean of 1,700 hours and a standard deviation of 400 hours. A random sample of 64 of these light bulbs is taken. The probability is 0.15 that the sample mean lifetime is more than how many hours? Question 3 options: 1) 1725 2) 1670 3) 1652 4) 1752
According to AAA, the price of a gallon of regular, unleaded gas across gas stations in Ohio is normally distributed with a mean of $2.39 and a standard deviation of $0.15. If you randomly pick a gas station, what is the probability the price is exactly $2.46 per gallon? A) 0.14 B) 0 C) 1 D) 0.68

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