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A refrigerated delivery truck has a load of perishable goods worth $10,000. If the refrigeration unit is not cold enough, the food may spoil. The cost of the spoiled food will evenly vary from no c
You want to know if there's an association between college students' spring break destinations and what year they're in. You take a random sample of 405 college students and record the following dat
At a track and field tournament, Fred's long jumps vary evenly from 6.5 to 7.2 meters. Let X be the length of Fred's long jumps. a) Name the distribution and parameter(s) of X.
Compute the mean of sample proportion of smokers. Compute the probability that the sample proportion of smokers is less than 50%. Find the answer closest to 3 decimal places.
The lifetime in hours of a certain kind of radio tube is a random variable with the probability density function given by
Compute the probability that the sample proportion of smokers is less than 50%. Find the answer closest to 3 decimal places. Compute the probability that the sample proportion of smokers is greater th
Calculate the sample covariance between two variables X and Y, using the formulas described in lecture or text. Treat the columns below as expressing data pairs, such that the first value i
Wilmer thinks that NBA players, in general, are taller than high school basketball players. He has measured 5 NBA players, with heights 80, 84, 73, 75, and 77 inches. He has measured 5 high school b
What is the probability that we will pick a blue ball? If we picked a blue ball, what is the probability that the selected urn was urn-1?
Find the optimal crude oil allocation for the following example if the profit associated with square foot of fiber is cut to $0.375, while the profit associated with per gallon of gasoline stayed at
What is the probability that in a 10 minutes period more calls will arrive than the system can handle? Based on this probability, comment on the adequacy of the new answering system.
It is your birthday and you are waiting for someone to write you a birthday message on Facebook. On average (on your birthday) you receive a facebook message every 10 minutes. Assume that the times
Individuals ages 15 to 19 spend 1.1 hour per day using a computer for leisure. If these times follow an exponential distribution, find the proportion of each group that spends:
Find the critical value. Assume that the test is two=tailed and that n denotes the number of pairs of data n=30 a=0.001 I need to see how to calculate this answer. Thanks
Research in the gaming industry showed that 10 percent of all slot machines in the united states stop working each year. Short's Game arcade has 60 slot machines and only 3 failed last year. Use the
In a town, 31% of the residents contributed to the Republicans, 45% contributed to the Democrats, and 12% contributed to both. What percentage contributed to neither party. Show work.
What is the homecoming committee is to consiste of a President, Treasurer and Secretary? Answer as a Fraction.
Air quality is measured by the concentration of a dangerous pollutant. The major of the city has engaged in a program to improve traffic conditions in order to decrease the concentration of that pol
Suppose Y is the daily revenue for some company, where E(Y) = $10,000 and
What is the minimum that must be sold to earn the bonus? What is the minimum that must be sold to avoid the extra special attention?
The average life span for batteries is 100 hours with a standard deviation of 10 hours. Construct a confidence interval at the 95% confidence level
The average flight from point A to point B takes 100 minutes with a standard deviation of 10 minutes.
What is the probability that one of the senators earned a score of less than 90 on the Be Sincere Even If You Don't Mean It Test? What is the probability that one of the senators earned more than a
A candy company claims that 19% of its plain candies are orange, and a sample of 100 such candies is randomly selected. Find the mean and standard deviation for the number of orange candies in such gr
What are the values of "Mhu p" & "Standard Deviation p" (site won't allow symbos) Is it appropriate to approximate the p distribution with a normal distribution ? Explain.