0/ 1.0 Points If events A and B are mutually exclusive‚ then the probability of both events occurring simultaneously is equal to A.0.0 (CORRECT) B.1.0 C.0.5 D.any value between 0.5 and 1.0 Question 3 of 25 1.0/ 1.0 Points The table below shows the preferences for elective courses of students who are undecided about their majors. Philosophy Digital Art Film Studies Male 9 16 22 Female 6 18 14 What is the probability of randomly selecting a student who is female or prefers Digital
Premium Normal distribution Probability theory Standard deviation
Exam 3 Study Guide Math 219 1. The probability that a randomly selected patient who visits the emergency room will die within 1 year of the visit is 0.05. (binomial probability distribution) a) What is the probability that exactly 1 of 10 randomly selected visitors to the ER will die within 1 year? b) What is the probability that fewer than 2 of 25 randomly selected visitors to the ER will die within 1 year? c) What is the probability that at least 2 of 25 randomly selected visitors
Premium Normal distribution Probability theory Standard deviation
10000 Total 1000 5‚970 129520 a. b. c. The probability that a bar containing $50 or $100 bill is purchased is 30 / 1000 = 0.03 Hence customer have to buy 100 bars of soap‚ so that he or she has purchased three bars containing a $50 or $100 bill. d. Given n=1000‚ E(X) = 5.97‚ SD(x) = 9.68912 The probability that a soap contains a bill of $20 or above is 100 / 1000 = 0.0.1 Binomial with n =8‚ p = 0.1 Hence the probability that at least one of these bar contains a bill of $20
Premium Probability theory Variance Normal distribution
100 but less than or equal to Rs 150. (iii) monthly income greater than Rs 250. 2. The demand of a product is approximately normally distributed with an average demand of 300 units per month. The probability of demand being less than 280 units is 0.025. What is the probability that demand is more than 315 units? 3. Approximately 30% of the time demand of a product is more than 250 units‚ and 20% of the time demand is less than 200 units. What is the average demand?
Premium Normal distribution Standard deviation Poisson distribution
Econ 201 Homework 3 Emily Wiemers All questions are worth 11 points—you all get one point for free. 1. The only DVD club available to you charges $4 per movie per day. If your demand curve for movie rentals is given by P=20-2Q‚ where P is the rental price ($/day) and Q is the quantity demanded (movies per year)‚ what is the maximum annual membership fee you would be willing to pay to join this club? 2. Smith lives in a world with two time periods. His income in each period‚ is $210
Premium Time Economics Probability theory
Name: Tung Son Nguyen ID: 1418366 (Bold letters below are my answers) FIN 3331 – Risk & Return Assignment 1. You are given the following probability distribution of returns for stock J: A probability of .2 that the return will be 12%; a probability of .35 that the return will be 18%; a probability of .3 that the return will be -10%; and a probability of .15 that the return will be 10%. What is the expected return of this stock? What is the standard deviation rounded to the nearest whole number
Premium Rate of return Investment Probability theory
the z-score for which the area under the standard normal curve to its left is 0.04 9) Determine the two z-scores that divide the area under the standard normal curve into a middle 0.874 area and two outside 0.063 areas. Find the indicated probability or percentage for the normally distributed variable. 10) The variable X is normally distributed. The mean is μ = 15.2 and the standard deviation is σ = 0.9.
Premium Normal distribution Standard deviation Binomial distribution
20-25 25-30 30-35 35-40 Frequency 2 5 7 13 21 16 8 3 A salesman has a 60% chance of making a sale to any one customer. The behaviour of successive customers is independent. If two customers A and B enter‚ what is the probability that the salesman will make a sale to A or B. To verify whether a course in Research Methodology improved performance‚ a similar test was given to 12 participants before and after the course. The original marks and after the course marks are
Free Probability theory Normal distribution Variance
Probabilistic techniques assume that no uncertainty exists in model parameters. . Answer True False 2 points =F Question 5 . P(A | B) is the probability of event A‚ if we already know that event B has occurred. . Answer True False 2 points =T Question 6 . A binomial probability distribution indicates the probability of r successes in n trials. . Answer True False 2 points =T Question 7 . A continuous random variable may assume only integer values within
Premium Normal distribution Probability theory Costs
model is compared to the probability model because the stochastic models and probability uses the same range of values‚ in every variables in each form of distributions. Probability Model is a stochastic model that shares a similar mathematical formulation with deterministic model that incorporates the same element of randomness‚ via contrasts and comparisons relying on predictions based on observation regarding each variable. Gaussian is the simplest probability model that operates and
Premium Normal distribution Mathematics Model