Students at University X must have one of four class ranks-freshman, sophomore, junior, or senior. At University X, 35% of the students arefreshmen and 30% are sophomores. If a University X student is selected at random, the probability that he or she is either a junior or a senior isa70%35%30%O d65%O O o O

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Answered: Students at University X must have one…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A 13.3%B 26.6%C 39.9%D 53.2%
64% of all students at a college still need to take another math class. If 4 students are randomly selected, find the probability that a. Exactly 2 of them need to take another math class. b. At most 2 of them need to take another math class. c. At least 2 of them need to take another math class. d. Between 2 and 3 (including 2 and 3) of them need to take another math class.
A car dealership sells two types of cars: sedans and SUVs. The dealership conducted a survey and found that out of 200 customers, 120 purchased sedans, 80 purchased SUVs, and 40 purchased both types of cars. Calculate the probability that a randomly selected customer purchased either a sedan or an SUV.
20% of teenagers in a small town say they like reading news online. Suppose you randomly select 7 teenagers from the town and ask them whether or not they enjoy reading news online. Find the probability that at least 3 say they enjoy reading news online.
A bicycle factory runs two assembly lines, A and B. 93% of line A's products pass inspection and 90% of line B's products pass inspection. 30% of the factory's bikes come off assembly line B and the rest come off line A. Find the probability that one of the factory's bikes did not pass inspection and came off assembly line A. The probability is (Type a decimal. Do not round.)
33% of all college students major in STEM (Science, Technology, Engineering, and Math). If 39 college students are randomly selected, find the probability that d. Between 7 and 12 (including 7 and 12) of them major in STEM.
Assume that the car lot contains 25 percent Volvos, 30 percent Corvettes, and 45 percent BMWs. Of the Volvos, 10 percent have navigation systems, 90 percent of the Corvettes have navigation systems, and 70 percent of the BMWs have navigation systems. You are assigned a car at random. If the car has a navigation system, what is the probability that it is not a Volvo?
A football team consists of 13 each freshmen and sophomores, 18 juniors, and 19 seniors. Four players are selected at random to serve as captains. Find the probability of the following. P(at least 1 of the students is a senior)=
The probability that a person in the US has a type A positive blood is 30%. Three unrelated people in the US are selected at random. a. Find the probability that all three have A positive blood. b. Find the probability that none of the three have type a positive blood. c. Find the probability that at least one of the three has A positive blood.
Brian is in charge of the mailroom of the Boryk Corporation. Each day the company receives several packages via the U.S. Postal system, for which he must sign. The following is the probability distribution for the number of daily pieces of mail that comes via the Postal system.
Assume that 50% of the students at the university have taken four years of high school math. Of those with four years of high school math, 60% plan to major in science. Of those without four years, Only 25% plan to major in science. You stop a student at random. If the student plans to major in science, what is the probability that the student had four years of high school math?
A survey determines that in Blue Village, 0.33 of the residents do jogging, 0.42 do biking, and 0.12 do both activities. Find the probability that a randomly selected person does biking only.

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