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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.
A local pizzeria wants to know how much the average cost of an order is during lunchtime on Wednesdays. They collected data from ten orders on Wednesdays (assume their sampling method provides a rep
What is the probability that the male sample will have at most three more days of absences than the female sample?
A random sample of n= 35 observations from a quantitative population produced a mean x=2.4 and a standard deviation s=0.29. Suppose your research objective is to show that the population mean exceed
We therefore expect about 109 cases of such cancer in a group of 299,188 people. Estimate the probability of 97 or fewer cases of such cancer in a group of 299,188 people. What do these results sugg
In a survey of 1116 people, 866 people said that they voted in a recent presidential election, Voting records show that 75% of eligible voters actually did vote. Given that 75% of eligible voters ac
Are X and Y independent? Calculate the cdf and pdf for R, the distance from the origin.
Steve and his friends are relaxing at a local tavern. The number of drinks that Steve's table receives is Poisson distributed with an average of 9 drinks per 3 hours. Write out the distribution and
What conclusion would you draw about the relationship between these two variables if alpha(a) = .05? What conclusion would you draw about the relationship between these two variables if alpha(a) = .10
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
Suppose that x1, x2, x3, x4, and x5 is a random sample from a distribution with density function: f(x) =1/theta for 0<x<theta. The null hypothesis theta=1 is to be tested against the alternati
Mileage tests were conducted on a randomly sample of 100 new tires. The avg. tread wear was 50000 miles with Standard Deviation of 3500 miles. What is the best estimate of the average tread life in
What is the z score for Indiana University? What is the z score for the University of Evansville?