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In 1988 the mean expenses for college were $8000 with a standard deviation of $800. If 40 students were selected at random, what is the probability that the mean expenditure for this sample would be between 6120 and 7800? Round your answer to 4 decimal places
What is the probability that a particular driver had exactly two speeding violations?
Calculate the sample correlation coefficient by hand. By use of a spreadsheet calculate the sample correlation coefficient.
Let p represent the population proportion of all numbers in the corporate file that have a first nonzero digit of 1. Test the claim that p is less than 0.301 by using What is the P-value of the test statistic?
You conduct 8 Bernoulli trials for which the probability of success is 0.85. What is the probability that you will obtain exactly two successes?
a journal article reports that a sample of size 5 was used as a basis for calculating a 95 ci for the true average
consider the number of subsets of a set with nelements. use the fact that there are cnk subsets of k elements with
What is the appropriate set of hypotheses to test such that a possible outcome of the test would indicate;
in six test runs a truck operated 8 10 15 7 9 and 11miles with one gallon of gasoline. at the 95 level of confidence is
List the 15 possible samples (without replacement) of two artists that can be selected from the six. for brevity, use the initial provided.
a supervisor in the department of rehabilitive services is critical of the performance of one of her counselors. the
A stationery store to estimate the mean retail value of greeting cards purchased by its customers when they visit the store. A random sample of 15 customers indicates a mean amount of $2.55 with a standard deviation of $0.44 per customer per visi..
in the fictional dice game piracy a player begins a turn by rolling a handful of 13 fair independent six-sided
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