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Explain how to use random digits to simulate the throw of a single astragalus. Then use the table of random digits at the start of the line 140 to simulate throwing four astragali independently of e
The annual per capita consumption of ice cream (in pounds) in the United States can be approximated by a normal distribution with a mean of 20.7 lbs and a standard deviation of 4.2 lbs. What propor
The concentration of anabolic steroids in urine behaves as an exponential decay. For a specific urine sample, the best-fit exponential function is R = (0.6 mg/L)(0.43)t where R is the concentration
Two species of rhinoceros native to Africa are black rhinos and white rhinos. In 1998, the International Rhino Federation estimated that the African rhinoceros population consisted of 2,600 white rh
The time needed to complete a final examination in a particular college course is normally distributed with a mean of 79 minutes and a standard deviation of 8 minutes. Answer the following questions
Suppose we are interested in bidding on a piece of land and we know one other bidder is interested. The seller announced that the highest bid in excess of $10,100 will be accepted. Assume that the c
The breaking strength of a rivet has a mean value of 9,900 psi and a standard deviation of 498 psi. What is the probability that the sample mean breaking strength for a random sample of 40 rivets is
What is the probability that a hotel room costs between $200 and $300 per night (to 4 decimals)? What is the cost of the 20% most expensive hotel rooms in New York City? Round up to the next dollar.
There are 40 students in an elementary statistics class. On the basis of years of experience, the instructor knows that the time needed to grade a randomly chosen first examination paper is a random
Let A be the number of rounds until Lionel wins his first stuffed animal. What is the distribution and parameters of A? Also, find the expected value and variance of A.
Let X be the number of teams from SD on Pete's season schedule. What's the probability that none of the Pete's opponents are from SD? What distribution and parameter(s) are you using?
Can someone please check my answer for the following pdf, if its correct, can you then explain how I would get E(X) in this case; I under expected value in discrete case, but not continuous.
A sample has a mean of M=39.5 and a standard diviation of s=4.3, and produces a t statistic of t=2.14. For a two-tailed hypothesis test with a=.05, what is the correct statistical decision for this
Find conditional density function f(x|E) for the experiment of a number selected at random from the interval [0,1], given E, where E is the event that x > 4.
Consider the following random experiment. First, one jar is selected at random, with the three jars being equally likely. Then, two balls are drawn from this jar without replacement. If the two ball
For each sample set, compute its corresponding approximations to the expectation and the variance. Plot one figure for expectation and one for variance to show the effect of different number
Find expected gain (or loss) for a holder of a European call option with strike price $90 to exercised in 6 months if the stock price on the exercise date may turn out to be $87, $92 or $97 with pro
On average, a major earthquake (Richter scale 6.0 or above) occurs 3 times a decade in a certain California county. Find the probability that one major earthquake will occur within the next decade.
A carnival has a game of chance: a fair coin is tossed. If it lands heads you win $1.00 and if it lands tails you lose 50 cents. How much should a ticket to play this game cost if the carnival wants
A hospital conducted a study of waiting time in its emergencyroom. The hospital has a main campus and three satellite locations.Management had a business objective of reducing waiting time foremerge
The article Modeling Sediment and Water Column Interactions for Hydrophobic Pollutants (Water Research, 1984: 1169-1174) suggests the uniform distribution on the interval (7.5, 20) as a model for de
The U.S. Bureau of Labor Statistics releases figures on the number of full-time wage and salary workers with flexible schedules. The numbers of full-time wage and salary workers in each age category
In a pavement study the diameter of the aggregate stones is found to be normally distributed with a mean of 4 cm and a standard deviation of 0.5 cm. Say this distribution is denoted by R.V. X, show