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The National Retail Federation determined that 23% of Black Friday retail shoppers, between 2010-2014 camped out in front of a store arriving before midnight on Thanksgiving. What is the approximate probability that in a random sample of 75 Black Friday shoppers, there will be 19 or more people who will camp out in front of a store?
What is the probability that a randomly selected individual will own both a colour television and a stereo set? What is the probability that a randomly selected individual will own a colour television or a stereo set?
Calculate the standard deviation of the number of available rooms in that sample. Construct a frequency distribution of the sample mean, and plot a histogram of this distribution.
a game consist of spinning a spinner and then rolling a number cube. the spinner is equally likely to land on any 1 of
a brief description of the graph- a summarizing statement about the main finding shown in the 3 graphs
Daily production of gadgets is normally distributed with mean 1000 (μ) and standard deviation 100 (o). a) What is the probability that today’s production will be more than 950?
art students are registered for the same class and attend independently of each other.student a 80 of the timestudent b
Found that 47% enjoy playing sports. would confidence in the results increase if the sample size were 3600 instead of 1100. why or why not?
paul is conducting a study on the dollar value of orders placed with various suppliers. a sample of 10 orders showed
In order to name factors that have been extracted researchers should look at: (a) Table of eigenvalues (b) table of un-rotated factor loadings
Read the article, "Better Living Through...Statistics?" and give an example of how you might use increasing information to make actual business decisions.
What is the equation for this regression model?
below are two groupsa 15 22 19 25 16b 32 25 27 33 21 35 30a test to see if the variances are the same give the null and
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