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When parking a car in a downtown parking lot, drivers pay according to number of hours or fraction thereof. The probability distribution of the number of hours cars are parked has been estimated as
Suggest all possible manners you could choose two numbers from pool of numbers that only equally likely contains 2, 3, 5, and 6. That is, if describe a random variable X for the possible number, X has
Find the expected value (in dollars) of the amount won by one entry. Find the expected value (in dollars) if the cost of entering this sweepstakes is the cost of a postage stamp (34 cents)
Find the coefficient on x10in each of the generating functions below.
An IQ test is designed so that mean is 100 and the standard deviation is 24 for the population of normal adults. Find the sample size necessary to estimate the mean IQ score of statistics students s
An electronic office product haves 5100 electronic components. Suppose that the probability that each component operates without failure throught the useful life of the product is 0.999, and suppose
Determine the area of the shaded region. The graph depicts IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. On either side of the sha
On a TV show, a contestant is required to throw a die. She then tosses as many coins as there were spots shown on the die. If she throws exactly four heads, she wins $10,000. What is the probability
The claim is that the proportion of peas with yellow pods is equal to 0.25 (or 25%). The sample statistics from one experiment include 560 peas with 127 of them having yellow pods find the value of
Suppose that thermometer readings are normally distributed with mean of 0 dgrees C and standard deviation of 1.00grees C. A thermometer is randomly selected and tested. For the case below, draw a sk
The value given below is discrete employ the continuity correction and describe the region of the normal distribution that corresponds to the indicated probability. Probability of fewer then 4 passe
Mothers Against Drunk Driving (MADD) is a very visible group whose major focus is to educate the public regarding the harm caused by drunk drivers. A study was recently done that emphasized problem
Employ the normal approximation to find the probability of the indicated number of voters. In this case assume that 106 eligible voters aged 18-24 are randomly selected Suspose a previous study show
People who love to drive fast cars frequently compare horsepower of cars engine to the maximum torque force produced by the engine. Some say horsepower is more important to acceleration, while other
Recall that the investigation discovered that in a random sample of 2,778 firms, 748 announced one or more acquisitions during the year 2000. Does the sample provide sufficient evidence to indicate
The skidding distances (in meters) were measured at 20 randomly chosen road sites. The data (saved in the SKIDDING file) are repeated below. Recall that logger working on road claims the mean skiddi
You're at a party and you know that 60 of the 200 people at the party are evil. Determine the probability that the first two people you meet are evil? I never took a probability statistics class so
There will be a $15 disposal charge for each liter of solvent left over at the end of the month. If there is the shortage of solvent, the production procedure is seriously disrupted at a cost of $10
Events A and B are equiprobable, mututally exclusive and independent. Whats is P[A]? At a Phonesmart Store, each phone sold is twice as likely to be an Apricot as a Banana.
You've a supplier that historically has 2% defect rate. You're determining the possibility of using screening system. The candidate system will detect a flaw 95% of the time if there is a flaw.
Assume b boys and g girls are lined up random. Determine the probability that there is a girl in the i-th spot?
There are 8 meetings in a town. 4 visitors choose the meetings at random to attend. Determine the probability that:
We are interested in determining the population mean using a sample of size n. Consider two alternative estimators of the population mean:
An electronic office product haves 5100 electronic components. Suppose that the probability that each component operates without failure during the useful life of product is 0.999, and suppose that
If one woman is randomly chosen find out the probabllity that her height is less than 63in. ________? If 41 woman are randomly chosen find out the probablity that they have a mean height of less th