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Determine the probability of the chosen ball being dull conditional on it being red? Determine the probability of the chosen ball being shiny conditioned on it being red?
Angus beef cattle weights are distributed N(1152, 84). Assume we don't know this mean (but, notice, we do know ?, the population standard deviation). We take sample of 49 cows to try to determine th
A friend of mine is giving the dinner party. His current wine supply comprises 8 bottles of zinfandel, 11 of merlot, and 9 of cabernet (he only drinks red wine), all from different wineries. If he
A company which produces fine crystal knows from experience that 13% of it's goblets have flaws and must be classified as seconds.
A researcher is using the chi-square test to determine whether there are any preferences among 4 brands of orange juice. With alpha = 0.05 and n = 30, the critical region for the hypothesis test wou
We are interested in determining whether the opinions of the individuals on gun control (as to Yes, No, and No Opinion) are uniformly distributed.
Coltron wants to start a Chimpokomon card collection. There are three kinds of cards, cards with fire chimpokomon, cards with water chimpokomon and cards with earth chimpokomon.
To get the daily news, 30% of the people watch TV, 30% read the newspaper, and 5% do both. If you choose a person at random from population, determine the probability that he or she will watch TV or
The Boeing 787-8 Dreamliner is designed to be 186 feet in length. The manufacturing procedure for assembling the 787-8 follows a bell shaped symmetric distribution with mean 185.4 feet and standard
There are 60 people in this class. 10 are women. If we form the committee by randomly selecting 5 people, what is the probability that there will be no women on the committee?
A professor who teaches 200 students in advanced statistic reports that 120 of her students have taken one course in the introductory research techniques, 40 have taken one course in both introducto
Let Y be uniformly distributed over interval (-1,3). Find the probability density function of U=Y^2. (Use the method of distribution functions)
Coltron wants to start Chimpokomon card collection. There are three kinds of cards, cards with fire chimpokomon, cards with water chimpokomon and cards with earth chimpokomon. If Coltron has 10 card
To keep up with current events, 30% of the people read the paper, 40% watch the news on TV, and 10% do both. If you pick an individual at random, what is the probability that he or she will read th
A professor teaches a course, "Advanced Applied Statistics". He has 50 students, 20 of whom major in applied math, 20 of whom major in computer science, and the rest major in engineering.
There are 25 pens in container on your desk. Among them, 20 will write well but 5 have defective ink cartridges. You will choose 2 pens to take to a test. Compute the probability:
A probability distribution is partially given in following table with additional information which the even values of X are equally likely. Determine the missing entries in the table.
Suppose that the number of network errors experiences in day in local area network (LAN) is distributed as a Poisson random variable. The mean number of network errors experienced in a day is 1.8.
In order to obtain sample of law firms, a list of all lawyers in city was atained and 7 lawyers were chosen at random. The law firms to which those lawyers belonged were then selected. Do you have r
A company is studying number of monthly absences among its 125 employees. The following probability distribution shows the likelihood that people were absent 0, 1, 2, 3, 4, or 5 days last month.
An insurance agent has appointments with four prospective clients tomorrow. From past experience the agent knows that the probability of making a sale on any appointment is 1 out of 9.
A manufacturer of headache medicine claims it is 80 percent effective in a few minutes. That is, out of every 100 users 80 get relief in a few minutes. A group of 12 patients are given medicine. If
A new car was put into production. It involved many assembly tasks. Each car was inspected at end of the assembly line and the number of defects per unit was recorded.
On a very hot summer day, 7 percent of production employees at Midland States Steel are absent from work. The production employees are randomly selected for a special in-depth study on absenteeism.
Sixty eight percent of customers of the fast food chain order hamburger, french fries and a drink. If random sample of 16 cash register receipts is chosen, what is the probability that 12 or more wi