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Why do we want to assume that our sample data represent a population distribution?
When sending data over the internet there is a certain probability that a message will be corrupted. One way to improve the reliability of getting message
The probability is .025 that an applicant at my bank will not be able to an installment loan. Last month we made 40 loans.
The Masterfoods company says that before the introduction of purple, yellow candies made up 20% of their plain M&M's, red another 20%, and orange, blue
The random variable X has a Poisson distribution with a mean of 5. The random variable Y has a binomial distribution with n=X and p=1/2.
Decision making under risk is a probabilistic decision situation.
In each situation below, is it reasonable to use a binomial distribution for the random variable X? Give reasons for your answer in each case.
In a computing facility there are two types of processors: type A and type B. Suppose random variable X represents the processing time of a job.
What are the steps for using the Normal Table to find the following:
A study of job satisfaction was performed for 4 occupations: doctor, chemist, CPA, & dentist. Job satisfaction was measured on a scale of 0-100.
A six-sided die is rolled 30 times and the numbers 1 through 6 appear as shown in the following frequency distribution.
For experiment a, find the probability of event A: at least one 6. For the second experiment, find the probability of event B: at least one pair of 6s.
Jules, Vincent, and Mia are physicians at the local hospital. One of their duties is being on call during non-working hours to handle any emergencies
At the end of a basketball game, a team is down by 1 point. As the last play, a player from that team throws a three-point shot
A box contains 4 marbles: 2 red, one blue and one green. Two marbles will be selected at random. Find the probability of selecting each of the following.
A package of frozen vegetables has a label that says "contents 32 oz."
Profits (X ) in an industry consisting of 100 firms are normally distributed with a mean value of $1.5 million and a standard deviation of $120,000. Calculate :
A cola-dispensing machine is set to dispense 9.00 ounces of cola per cup, with a standard deviation of 1.00 ounces.
The events X and Y are mutually exclusive. Suppose P(X) = .05 and P(Y) =.02. What is the probability of either X or Y occurring? What is the probability
A very rich investor has a small amount of spare cash which she wishes to invest.
Given a worn machine that creates defects at the average rate of 5 units per hour, what 's the probability of no defects occurring in any specific hour
A manufacturer of window frames knows from long experience that 5% of the production will have some type of minor defect that will require an adjustment
A study by the national park services revealed that 50% of vacationers going to the Rocky Mountain region visit Yellowstone Park, 40% visit the Tetons
In a certain town 63% of the houses have smoke detectors. The fire brigade estimates that people die 24% of the time when the fire is in a house
When two balanced dice are rolled, 36 equally likely outcomes are possible. Let X denote the smaller of the two numbers.