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Also, find the mean and the standard deviation of the number of returns the auditor finds to contain illegitimate deductions
According to a study published by a group of sociologists, about 2/3 of the 20 million persons in this country who take valium are women. Assuming this estimate to be valid, find the probability tha
Transportation costs based on the distance of each dealership from each plant are $220 from I to A, $300 from I to B, $400 from II to A, and $180 from II to B. The manufacturer wants to limit transp
A game is played with a pair of fair dice as follows. A player rolls a pair of dice five times. He score a "hit" on any given throw in the sequence if he throws either a 7 or an 11. He wins if he sc
A straight hands in poker consists of 5 consecutive cards regardless of suit. What is the probability of getting a straight flush?
In a study of 500 executives, 315 stated that their company informally monitored social networking sites to stay on top of information related to their company. Construct a 95% confidence interval f
What quantity would be required for a profit of $2,000? What is the anticipated utilization and what is the anticipated efficiency?
A new medication gives 10% of the users an undesirable reaction. If a sample of 14 users receive the medication, find the probability of:
If one day 5 of the 14 actually contain illegitimate deductions, find the probability that 2 of them will be selected by the auditor. Also, find the mean and the standard deviation of the number of
Consider the following two events: the first throw is a 1, 2, or 3; the first throw is an even number. Find the probability of each of these two events. Are these two events independent?
The mean inside the diameter of all washers produced by a machine is 0.502 inches and the standard deviation is 0.005 inches. The Company can only accept washers whose inside diameters are in the ra
Constructing confidence Intervals - given the sample mean and the sample standard deviation, use this information to construct the 90% and 95 % confidence interval for the population mean, which int
Cereal Boxes are sold with prizes inside. There are 3 different prizes possible and they occur with probability 1/2, 1/3 and 1/6. What is the expected number of Cereal Boxes you must buy to get one
What is the probability that in the next hour a total of n service requests will arrive? What is the probability density of service time of an arbitrarily chosen service request ?
Compute the value of the correlation coefficient for the data obtained in the study of the number of absences and the final grade of the seven students in the statistics class.
In the game of standard American Roulette, a bet placed on " Black" always has a p=18/38, probability of winning.
Are there any probability calculations that would be appropriate for rating an investment service? Why or why not?
Medical records of rattlesnake bites show that about 30% of bites are dry bites. If an ER sees 6 patients what is the probability first 5 bites contain venom and 1 does not?
An experiment consists of rolling three fair dice --- a red die, a blue die, and a white die --- and recording the number rolled on each die. Assume that the dice are fair, so that all outcomes are
Assume that there are 14 board members: 9 females, and 5 males including Mark. There are 3 tasks to be assigned. Note that assigning the same people different tasks constitutes a different assignmen
Assume that there are 7 different issues of Newsweek, 6 different issues of Sports Illustrated, and 2 different issues of Time, including the December 1st issue, on the rack. You choose 4 of them at
We wish to survey n people to estimate the proportion p of all people who have lied on an survey. People are asked to ?ip 2 coins. If both times it comes up as heads, they are asked to reply "no" if
You are given that on average a particular insurance sales person is successful 15% of the time. On a given week this person makes 12 sales calls.
A box contains three black pieces of cloth, two striped pieces, and four dotted pieces. A piece is selected randomly and then placed back in the box. A second piece is selected randomly. What is the
Two cards are drawn from a deck (without replacement). What is the probability they are both diamonds? Please show your work.