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
Homework 4.3 #21 43% of adults in the US receive fewer than 5 phone calls a day. In a random sample of 7 adults‚ what is the probability that the number receiving fewer than five calls a day is (a) exactly 3 (b) at least 3 (c) more than 3? n p 7 0.43 x P(Exactly x) P(At most x) P(At least x) 0 0.0195 0.0195 1.0000 1 0.1032 0.1228 0.9805 2 0.2336 0.3564 0.8772 3 0.2937 0.6502 0.6436 4 0.2216 0.8718 0.3498 5 0.1003 0.9721 0.1282 6 0.0252 0.9973 0.0279 7 0.0027 1.0000 0.0027
Premium Standard deviation Normal distribution Probability theory
BUS216 Exam #2 Review – Discrete Distributions 1. The number of calls coming into a PBX has a mean of 120 calls per hour. What is the probability of no calls in a one-minute interval? .1353 2. A school is sending 18 children to a camp. If 15% of the children in the school are first graders‚ and the 18 children are selected at random from among all 6 grades at the school‚ find the mean and variance of the number of first graders chosen? The mean is 2.7‚ and the variance is 2.3. n
Premium Probability theory Standard deviation Arithmetic mean
heads 4 times in a row. Let A represent the probability of rolling 4 heads. Therefor the probability of rolling a head four times is . b) There are 16 possible outcomes when tossing a coin 4 times. There are exactly 6 ways of tossing exactly 2 heads: Let A represent the probability of rolling exactly 2 heads. Therefor the probability of rolling exactly 2 heads is c) p’(rolling exactly 2 heads)=1-p(rolling exactly 2 heads) Therefor the probability of not rolling exactly 2 heads is 44.a)
Premium Probability theory Prime number Dice
event. b What is the probability that a randomly chosen applicant‚ i had either work experience or a certificate? ) = = = 0.9 ii has neither work experience nor a certificate? iii has a certificate if he has some previous work experience? = 0.33 2. Because of economic conditions‚ a firm reports that 30 percent if its accounts receivable from other business firms are overdue. If an accountant takes a random sample of 10 such accounts‚ determine the probability that p=30% @ 0.3 n=10
Premium Harshad number Accounts receivable Probability theory
Sampling Techniques Worksheet For each description of sampling‚ decide if the sampling technique is A. Simple Random B. Stratified C. Cluster D. Systematic E. Convenience 1. In order to estimate the percentage of defects in a recent manufacturing batch‚ a quality control manager at Intel selected every 8th chip that comes off the assembly line starting with the 3rd‚ until she obtains a sample of 140 chips. 2. In order to determine the average IQ of ninth-grade students‚ a school psychologist
Premium Random variable Probability theory Normal distribution
Hicks .5 MULTIPLE CHOICE Find the indicated probability. | 1) The table below describes the smoking habits of a group of asthma sufferers. 1) | | Light | Heavy | | Non-smoker | Smoker | Smoker | Total | Men | 431 | 44 | 41 | 516 | Women | 378 | 37 | 48 | 463 | Total | 809 | 81 | 89 | 979 | If two different people are randomly selected from the 979 subjects‚ find the probability that they are both heavy smokers. A) 0.0001262
Premium Standard deviation Statistics Normal distribution
discrepancies. During the discovery phase of the lawsuit‚ when both side submit all of the information they have to each other‚ the insurance company hired an independent CPA firm to calculate the GPF. To determine fraud‚ our group had to find the probability that a standard normal random variable exceeded the GPF samples given to us. We used the entire data set of 3‚005 invoices as the population‚
Premium Standard deviation Arithmetic mean Probability theory
Omkar & Yaying Wednesday 5-6pm WEEK 3 BES PASS Descriptive Statistics Population - a set of all possible observations. Sample - a portion of a population. We often use information concerning a sample to make an inference (conclusion) about the population. Parameter - describes a characteristic of the population‚ eg: the population variance Statistic- describes a characteristic of a sample‚ eg: the sample variance Frequency Distribution and Histograms Class - a collection of
Premium Standard deviation Median Random variable
the assignment you turn in needs to be your own work. 1. Suppose . That is‚ X has a normal distribution with μ=30 and σ2=144. 1a. Find a transformation of that will give it a mean of zero and a variance of one (ie.‚ standardize ). 1b. Find the probability that . 1c. Supposing 5X‚ find the mean of . 1d. Find the variance of . 2. A bank has been receiving complaints from real estate agents that their customers have been waiting too long for mortgage confirmations. The bank prides itself on its mortgage
Premium Normal distribution Variance Probability theory