For a randomly selected student in a particular high school, let Y denote the number of living grandparents of the student. What are the possible values of the random variable Y? (Points: 15) 1,2,3,4 4 0,1,2,3,4 0,1,2 2. When two balanced dice are rolled, 36 equally likely outcomes are
The length of time it takes to find a parking spot at the mall follows a normal distribution with a mean of 5 minutes and a standard deviation of 2 minutes. A) What is the probability that it takes more than 4 minutes to find a parking spot. B) what percent of individuals will take less than 3 minutes to find a parking s
Gas Station pump signs, at one chain, encourage customers to have their oil checked, claiming that one out of every four cars should have its oil topped. a.) What is the probability that exactly 3 of the next 10 cars entering a station should have their oil topped? b.) What is the probabily that at least half of the next
If the probability that an individual suffers a bad reaction from injection of a given serum is 0.001, determine the probability that out of 2000 individuals; a.) Exactly 3 b.) More than 2 individuals will suffer a bad reaction.
Insurance probability tables, as the one on the attachment, tabulates the average # of American males per 100,000 who will die during various age intervals. E.G., out of 100,000 male babies born alive, 1,527 will die before their first birthday. Answer following w/ table: a.) What is the probability that a newborn male will
A factory finds,on average, 20% of the widgets produced by a given machine will be defective for certain specified requirements. If 10 widgets are selected at random from the day's production of this machine, find the probability: a.) That exactly 2 will be defective b.) That 2 or more will be defective c.) That more than
4 different math books, 2 different Chemistry books, and 6 different physics books are arranged on a shelf. How many different arrangements are possible if: a.)The books in each particular subject must stand together? b.)Only the math books must stand together?
In a true experimental study, the subjects should be assigned to groups randomly. If this is not possible, and a researcher uses stratified sampling, the groups are sampled individual according to a _______________system based on the proportion of the subgroup in the population as a whole. On a multiple choice test, there a
Only for above listed OTA. Flight times normally distributed with a mean of 0.65 seconds and a stan. dev. of 0.15 seconds. If 100 candidates are randomly selected, find the probability their mean reaction time is less than 0.70 seconds. Answer is .9999
Only for above listed OTA. Female candidates for flight school have times normally distributed with a mean of 0.65 seconds and a stan. dev. of 0.15 seconds. If 25 candidates are randomly selected, find probability their mean reaction time is less than 0.70 seconds. Answer is .9525
Only for above OTA. Please explain. Mean body temp. is 98.2 degrees and stan. dev. is 0.62 with normal distribution. If 16 people are randomly selected find the probability that their mean body temperature is below 98.5 degrees. The answer is .9738
Only above listed OTA Replacement time for tv sets normally distributed with a mean of 8.2 years and a stan. dev. of 1.1 years. a) Find probability that a randomly selected set will have a replacement time less than 5.0 years b) If you want to provide a warranty so that only 1% of the sets will be replaced before the warranty
Only for above listed OTA's. Assume weights normally distributed with mean u=143 lb. and standard deviant o=29 lb. Assume randomly selected. Draw graph and find indicated probability. P(150 lb < x < 180 lb).
A slot machine in Reno costs $1 to play. If the jackpot is $1,000 and the expected value is $ - 0.50 find the probability of winning.
Subject: Telecommunication system statistics Details: A unit for a telecommmunication system is to be designed so that the probability that it fails during a period of five years does not exceed 0.4. the unit is to be made up of (n) effectively identical componants each with an exponential failure distribution and a hazard rat
Let be real, independent random variables of same law. Let and . a. Evaluate the repartition functions of U and V using the repartition function common to the . b. If the law common to the has a density function, prove that U and V have density functions, and calculate them.
1. The manager of a toy store has to decide how many toys to stock for the Christmas season. Each toy cost the store $5 and is sold for $10. The manager is certain that total sales of a particular toy will always be either 1,000 units, 2,000 units, 3000, 4000, or 6,000 units. The manager has to decide whether to order 2,000, 4,0
Seiko purchases watch stems for their watches in lots of 10,000. Seiko's sampling plan calls for checking 20 stems, and if 3 or fewer stems are defective, the lot is accepted. a. Based on their sampling plan, what is the probability that a lot of 40 percent defective will be accepted? b. Design an OC curve for incoming lot
See the given problem attached.
Question was asked previously and the calculations not detailed enough for me to determine how the answer was received. Please provide detailed explanation - I got a different answer and I KNOW mine is not right! Question: A manufacturing process produces units that average 10 inches in length with a standard deviation of 3
1.) A recent survey by the American Accounting Association revealed 23 percent of students graduating with a major in accounting select public accounting. Suppose we select a sample of 15 recent graduates. a. What is the probability two select public accounting? b. What is the probability five select public accounting? c. H
The average weekly earnings for women in managerial and professional positions is $685 with a standard deviation of $45. Salaries are normally distributed. Answer the following questions. a. What is the probability that a woman will have a weekly salary of more than $650? b. What is the probability that a woman will have a w
Question 2: Using the normal approximation to the binomial to approximate the probability that X is at least 10, the area under the normal curve should be calculated from? Question 1: A die was tossed. Given that an even number occurred, the probability that it was a 4 is? Question 3: A coin is tossed 1,000 times. The probab
A group of 30 people gather in a room. What is the probability that at least 2 of these people have the same birthday? The year of birth is not considered; having the same birthday means two peple were born on the same day of the year.
1. In a recent poll of married couples, about 79 percent of the men and 55 percent of the women were employed outside the home. In 39 percent of the couples, both the husband and the wife work outside the home. Find the probability that in a randomly selected couple either the husband or his wife works outside the home.
Construct a table giving the binomial distribution for each of the following: a) The probability of guessing correctly on a 10-question true-false test. b) The probability of guessing correctly on a 20- question multiple choice test, with 4 alternatives per question. c) For a 100-question true-false test, the normal approx
Please see the attached file for the fully formatted problem. f(y) = cy^2(1-y)^4 0<y<1 f(y) = 0, elsewhere Find the value of C that makes f(y) a probability density function, then find E(Y)
1. A True-False test was developed for a Risk Management class. A student, who didn't study, decided to randomly guess the answer on each question. Assume that the probability that the student guess correctly on each question is 50%. The exam has 20 questions. A correct answer adds 1 to the test score, an incorrect answer adds 0
Suppose the marketing manager at Cooke collectible has analyzed the possible demand levels and subjectively assessed the following probabilities for the various demand levels. Demand level probability 20,000 0.10 40,000 0.30 60,000 0.40 80,000 0.20 1.00 Compute expected value