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If a random sample is to be drawn from a population consisting of 5000 sampling units with a variance of 20% and a desired standard error of 1.6%. What is the optimal sample size?
If profit earned in the manufacture and sale of X units of a product is P dollars where: P = 10X - 0.001X2
Eexperiment begins the instant after the zeroth car goes by. Determine, in as simple form as possible, expressions for the probability that?
Pedestrian Walk Buttons New York City has 750 pedestrian walk buttons that work, and another 2500 that do not work (based on data from "For Exercise in New York Futility, Push Button
Suppose you are working with a data set that is normally distributed, with a mean of 300 and a standard deviation of 44. Determine the value of x from the following information.
Draw frequency polygons for each of the four distributions (assume they are normal) with the raw scores indicated for all six of the standard deviation units. a) Mean= 15 SD= 3
These 64 students will spend a combined total of more tahn $715.21? What is the probability that these 64 students will spend a combined total between $703.59 and $728.45?
Determine the probability in big class that both sections are covered? Only one section? Neither section? Determine the expected number of sections covered?
A bookcase contains 3 statistics books and 4 biology books. If 2 books are chosen at random, find the chance that both are statistics books.
A university wants to determine the proportion of students who use a cash card to pay at the university food service. Out of 100 students surveyed, 65 students use a cash card. Estimate the value of the population proportion.
State the quick rule for a significant correlation and explain its limitations. What sums are needed to calculate a correlation coefficient? What are the two ways of testing a correlation coefficient for significance?
Heights of college-aged women are approximately bell-shaped and symmetric, with almost all of them (95%) falling between 58" and 72". Find the approximate values of the mean and standard deviation.
Work through a simple regression calculation using intrinsic job satisfaction nd extrinsic job satisfaction. Select thirty data points to use for each group.
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