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Under what situations must a the nonparametric test be used? Describe in detail. Write down the strengths and weaknesses of nonparametric tests? Can outcomes of nonparametric tests be generalized to populations?
Solve the mean and standard deviation equations
The mean number of cargo ships that arrive at a port is 3 per day. The port has staff and facilities to handle up to 6 ships in a day. Using the Poisson distribution, find the probability that, on a given day,
Compute the 95% confidence interval for the percent of homeowners who are dissatisfied with their homeowner's insurance policy.
Eighty-eight shoppers were interviewed at random, and 59 said that they prefer to shop alone. What is the value of q-hat?
Statistical aptitude scores are known to be normally distributed, with mean = 50. A researcher has designed a new program intended to improve students statistical aptitude, and has enrolled a sample of 30 students in it.
Assume that the cost for this type of hospital emergency room visit is normally distributed with a standard deviation of $92. Assume that the following questions about the cost of a hospital emergency room visit for this medical service.
The mean amount of time a (unnamed) computer server is down is 18.3 minutes with a standard deviation of 5.7 minutes.
Which of the following would be most helpful in assessing the practical significance of a test of hypotheses about a proportion?
What percent of the Fords traveled 62.000 miles or less during the year?
Let X be a random variable of the continuous type that has pdf f(x). If m is the unique median of the distribution of X and b is a real constant, show that E(X - bl) = E(X - ml) + 2 [(b - x)f(x) £lx, provided that the expectations exist.
Determine and plot the probability mass function and probability distribution function of the contract award amount (in millions of dollars).
A fair coin is flipped 3 times. Compute the odds of flipping 3 tails.
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