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Dear all kindly guide me towards solution for Part B
Professor Random has taught probability for many years. She has found that 80% of students who do homework pass the exam, while 10% of students who dont do the homework pass the exam. If 60% of the students do the homework,
A.what percent of students pass the exam?
B.Of students who pass the exam, what percent did the homework?
Ans:
Part:A
P(Pass who do HW)=.8
P(Fail Who do HW)=.2
P(Pass how not do HW)=.1
P(Fail Who not do HW)=.9
P(Pass if 60% do HW)=52%
Find the number of ways in which 06 teachers can be assigned to 04 sections of an
introductory psychology course?
a. If no teacher is assigned to more than one section.
b. If a teacher can be assigned more than one section.
A class contains 10 men and 20 women of which half the men and half the women
have brown eyes. Find the probability that a person chosen at random is a man or has
brown eyes.
Solution:
P(Man)=10/30=.33
P(Brown)=15/30=.5
P(M intersect B)=5/30= .166
P(MUB)=P(M)+P(B)-P(M intersect B)
P(MUB)= .33 + .5 - .166
P(MUB)= .664 Ans
If solution wrong kindly guide me
thanks soroban and all last one clear all things
Dear All kindly Guide me if solution is wrong
A bag contains 14 identical balls, 4 of which are red, 5 black and 5 white. 6 balls are
drawn from the bag. Find the probability that,
a. Three are red.
b. At least 2 are white.
Solution:
A.
Total no of possible outcomes 14!/6!8!=3003
n(A)=480
P(3red)=480/3003=.159
For Part B Pls guide me how i start
Kindly correct me if there is any mistakes
A person owns 2 cars, one a compact and one a standard model. About ¾ of the times he uses compact car to travel to work and gets home by 5:30 about 75% of the times. If he uses standard car he gets home by 5:30 about 60% of the times. If he gets home by 5:35, what is the probability that he used the compact car?
P(C)=.75
P(C/05:35)= .25
P(S)= .60
P(S/5:35)= .40
P(05:35/C)=?
P(05:35/C)= P(C).P(C/05:35)÷P(C).P(C/05:35)+P(S).P(S/5:35)
P(05:35/C)=.43 Ans
Introduction to statistical theory but question not belongs to this book
i don,t know about book but 50 question was given to us by teacher to improve skills
by using compac car the probability that he reached home after 05:30 is .25
by using standard car the probability that he reached home after 05:30 is .40
I will share my work with you, thanks for your help
My concept regarding probability not clear i need help in this regard
Dear i need help how i solve this question, What should i find 1st and what we need to find towards solution.
A person owns 2 cars, one a compact and one a standard model. About ¾ of the times he uses compact car to travel to work and gets home by 5:30 about 75% of the times. If he uses standard car he gets home by 5:30 about 60% of the times. If he gets home by 5:35, what is the probability that he used the compact car?
Hi Candide;
thanks for your help
A paint store chain provides and sells latex and semigloss paint. Based on long range sales, the probability that a customer will purchase latex is .75. Of those that purchase latex paint, 60% also purchase rollers but 30% of semigloss buyers purchase rollers. A randomly selected buyer purchases a roller and a can of paint. What is the probability that the paint is latex.
How we draw the Venn diagram of Event A and B representing the following
1. A and B are arbitrary
2. If A occur B must occur
3. If A occur B can,t occur
4. A & B are independant
Dear all your help required
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