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Consider a regular polygon (all sides are of equal length) with n sides.How many triangles are formed if no side of the polygon can be a side of a triangle?
What percentile is associated with a T score of 39? How do you work it out?
Sunita's job is to provide technical support to computer users. Suppose the arrival of calls can be modeled by a Poisson distribution with a mean of 5.7 calls per hour. What's the probability that
What is the maximum request rate? that you can handle if you want the probability that a user will have to wait to be no more than 5%?
You conducted a t-test. You found a statistically significant difference between your groups even though your sample size was relatively small. Upon conducting a post hoc power analysis you found th
The number of bank robberies that occur in a large North American city is Poisson distributed with a mean of 1.8 per day. Find the probabilities of the following events
Students take at least 2 courses out of Arts, History, and Science. 60% take Arts,80% take History,70% take Science. How many students take all 3?
Assume that women's heights are normally distributed with a mean of 63.6 inches and a standard deviation of 2.5 inches. If 90 women are randomly selected, find the probability that they have a mean
The probability that a university graduate will be offered no jobs within a month of graduation is estimated to be 5%. The probability of receiving one, two, and three job offers has similarly been
The cost of parking is 3.5 dollars per hour. Calculate the mean and standard deviation of the amount of revenue each car generates.
Find the mean, variance and standard deviation for the probability distribution given below:
Three contractors (call them A, B, and C) bid on a project to build an addition to the UVA Rotunda. Suppose that you believe that Contractor A is 5 times more likely to win than Contractor B, who in
A survey asks adults to report their marital status. Suppose that in the city which the survey is conducted, 48% of adults are married, 13% are single, 20% are divorced, and 19% are widowed. Find th
Given E[X] = 10; E[X2] = 125; and E[X3] = 1750, what is the third moment about the mean?
A box contains 4 balls numbered 1, 2, 3, and 4. Two balls will be drawn at random, without replacement, and the numbers in the chosen balls are obaserved. 1. An appropriate sample space of this rand
Recent information published by the U.S. Environmental Protection Agency indicates that Honda is the manufacturer of five of the top twelve vehicles in terms of fuel economy.
It is estimated that .54 percent of the callers to the customer service department of DellInc. will recieve a busy signal. What is the probability that of todays 1,200 callers at least 5 received a
Obtain 25 values of bivariate normal data using nonzero mean vector and nondensity covariance vector and use Cholesky decomposition method.
The correlation between stride rate and speed was .996. Write the linear equation of best fit for predicting energy released from carbohydrates. Then, interpret the slope and y-intercept in context.
Find the cost for staying with the gym for 3 years. Determine the maximum number of months one can stay with this gym for $1000.
WageWeb is a service of HRPDI and provides compensation information on more than 170 benchmark positions in human resources. The October 2003 posting indicated that labor relation managers earn a me
For each equation below identify what type of equation it is (linear or exponential), which variable is the independent variable (name it) and which variable (name it) is dependent in the following
Suppose that a random variable, X has the probability distribution
A trucking firm delivers appliances for a large retail operation. The packages (or crates) have a mean weight of 300 lb. and a variance of 2209. (Give your answers correct to four decimal places.)
Suppose that the amount of time between consecutive surges in an electricity network has an exponential distribution with rate of one surge every fifteen days.