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A box contains 3 plain pencils and 5 pens. A second box contains 9 color pencils and 3 crayons. One item from each is chosen at random, what is the probability that a pen from the first box and a crayon from the second box are selected?
Conduct a Chi-Square Test for Goodness of Fit. (Use a .05 significance level and make sure you show all 5 steps of the hypothesis test)
a survey of 25 randomly selected customers found the ages shown in years. the mean is 32.08 years and the standard
suppose sample size n100 sample proportion .25 the null hypothesis is that the true proportion 0.20 and the
frans convenience marts are located throughout a metropolitan area. fran the owner would like to expand into other
a marketing firm asked a random set of married and single men as to how much they were willing to spend for a vacation.
On average, 8% of the subscribers respond to the survey. Of the 8% who respond, an average of 53% say they will renew. Sample and Population.
a firm wanted to see if there was a significant difference between two neighboring communities in terms of the mean
consider the following frequency of demanddemandnbspnbspnbspnbspnbspnbsp relative
Define the decision rule. Calculate the value of the test statistic.
Find the probability that the mean aptitude test score for a randomly selected group of 150 8th graders is between 98 and 102.
Mary claims that the range, standard deviation and variance are all measures of dispersion. John adds to Mary's claim by stating that the coefficient of variation is a measure of relative dispersion.
reported crimes are believed to occur at random at different rates for different types of crime. the incidence rate for
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