Homework Answers
Let X be the number of used books
X ~BInomial(6,0.30)
The probability that she finds exactly 2 used books is :
P(X=2)
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A student needs to buy 6 books this semester. The number of books that she will...
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A consumer looking to buy a used red Miata car will call dealerships until she finds a dealership that carries the car. She estimates the probability that any independent dealership will have the car will be 28%. We are interested in the number of dealerships she must call. In words, define the random variable X. List the values that X may take on. Give the distribution of X. X ~ _____(_____,_____) On average, how many dealerships would we expect her...
A consumer looking to buy a used red Miata car will call dealerships until she finds...
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10. S B A 0.30 0.10 0.45 0.15 a. P(BIA) b. P(B) c. Are events B...
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1. Bobby is a college student who has €500 of income to spend each semester on...
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Assume that a procedure ylelds a binomial distribution with n = 6 trials and a probability of success of p = 0.30
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B1) The random variable Krepresents the number of typing errors per page in a student' dissertation,...
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1.- A random variable follows a binomial distribution with a probability of success equal to 0.72....
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do q5 many ways can this be done so that exactly one box is empty? 5....
do q5
many ways can this be done so that exactly one box is empty? 5. A single card is drawn from a deck. Give an example of events that are independent but not mutually exclusive (i.e., disjoint). 6. If X is the munber of successes in 5 Bernoulli trials with probability of success .1, find P(X01 X 1) 7. If X is a random variable, X 1 is also a random variable on the same probability space. Explain why....
10. S B A 0.30 0.10 0.45 0.15 a. P(BIA) b. P(B) c. Are events B & A independent? 16. Let W be a random variable modeled as a binomial with p = 0.42 and n = 35. a. Find the exact value of P(W = 15) by using the binomial probability formula. b. Find the approximate value of P(14 <W < 16) by using a normal curve approximation. C. Round the probabilities in parts a. and b. to two...
1. Bobby is a college student who has €500 of income to spend each semester on books and pizzas. The price of a pizza is €10 and the price of a book is є50. Suppose he consumes 20 pizzas. (a) Assuming that Bobby wants to maximie utility, draw Bobby's budget constraint and indifference curve. (b) Now, suppose Bobby's parents buy him a €300 gift certificate each semester that can only be used to buy You can assume that his indifference...
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B1) The random variable Krepresents the number of typing errors per page in a student' dissertation, with the following probability distribution: [SKI: 5 Marks] 00.05 0.30 2 0.40 3 0.15 4 0.10 1) Find the expected number of errors per page. 2) Find the variance and standard deviation of the random variable. 3) Find the following probability: P(X23) (2 Marks) (2 Marks) (1 Marks)
do q5
many ways can this be done so that exactly one box is empty? 5. A single card is drawn from a deck. Give an example of events that are independent but not mutually exclusive (i.e., disjoint). 6. If X is the munber of successes in 5 Bernoulli trials with probability of success .1, find P(X01 X 1) 7. If X is a random variable, X 1 is also a random variable on the same probability space. Explain why....
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