To get to know her students better, Ms.Jackson surveyed her maths students todetermine what hobbies and schoolsubjects they prefer.The probability that a student enjoysskateboarding is 0.4, the probability thata student prefers health is 0.8 and theprobability that a student enjoysskateboarding and prefers health is 0.3.What is the probability that a randomlychosen student enjoys skateboarding orprefers health?

event A : enjoy skateboarding B : prefers health givenprobabilities P(A) = 0.4 P(B) = 0.8 P(A…

Answered: To get to know her students better, Ms.…

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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Similar questions

Problem #1: Let X~ Unif[−4, 4], and Y = (X + 1)². (a) Find ƒy(²) and fy(16), where fy(•) is the probability density function of Y. Separate your answers with a comma. (b) Find P{Y < 16}.
In a classroom of 27 students, there are 17 girls and 10 males. Mr. Stover wants to randomly select a student but states that the probability of selecting a female student is a lot larger than selecting a male student. Is this assumption correct? Explain your answer.
When Donald Trump was campaigning for President , 65% of constituents supported his policy on legalizing marijuana. Today, Donald Trump is wondering if the support for legalizing marijuana has changed. If he polls 100 constituents, what is the probability of finding more than 58% still support the policy?
A common lab test during a medical exam is a blood count. The two main aspects are counting the number of white blood cells and differentiating white blood cells into several categories. One of the categories is neutrophils. Suppose 60% of white blood cells are neutrophils in a healthy person. What is the probability of seeing 2 neutrophils in a sample of three white blood cells from a healthy person? What is the probability of seeing 2 or fewer?
A high school baseball player has a 0.179 batting average. In one game, he gets 8 at bats. What is the probability he will get at least 5 hits in the game?
Students were all given a test that they ALL guess on. It had 10 questions and each were true or false. What is the probability that someone scored 0 or 10%
John creates comic strips for his town's newspaper. Last week, he created 8 comic strips, 6 of which were about raising kids. If John's dog indiscriminately ate 5 of the comic strips, what is the probability that all of them are about raising kids? Write your answer as a decimal rounded to four decimal places.
Political scientists want to determine the probability of exactly 3 out of the next 5 voters they meet approving a proposal. If the sample probability of the voters approving the proposal is 50%, the number of trials is and the number of successful trials is The probability that 3 out of the next 5 voters approving the proposal is
Delaney is about to take a final exam that consists of 20 questions. To motivate her to study, her parents promised her $500 if she gets at least 17 questions right. The questions are multiple choice and the probability of her getting a question right is 0.75 on each question of the final exam. What is the probability that she gets exactly 17 questions right? What is the probability that she gets at least 17 questions right?
A basketball player hits three-point shots 45% of the time. If she takes 4 shots during the game, what is the probability that she misses the first shot and hits the last three shots?
Kaya is planning a 4-day vacation at the beach. The forecast has a 25% chance of rain for each of those three days. What is the probability that it will rain just one of the four days? Show calculations and explain reasoning!
There is about a 10% chance of being left- handed. If there are 25 students in a class, find the probability that no more than 3 are left-handed.

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