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Question: Cramer's Bar and Grille in Dallas can seat 130 people at a time. The manager has been gathering data on the number of minutes a party of four spends in the restaurant from the moment they are seated to when they pay the check. What is the mean number of minutes for a dinner party of four? What is the variance and standard deviation?
Number of Minutes Probability
60 0.05
70 0.15
80 0.20
90 0.45
100 0.10
110 0.05
certain radioactive substance is a random variable having the poisson distribution with lambda 2.4. use the following
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In a Bruskin-Goldring Research poll, respondents were asked how a fruitcake should be used. One hundred forty-five respondents indicated that it should be used for a doorstop, and 800 other respondents cited other uses, including birdfeed, landfil..
Crystal Ball requires the following steps:
You are planning a study and are considering taking an SRS of either 200 or 400 observations. Explain how the sampling distribution would differ for these two scenarios.
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In using the data from study A to make predictions, what percent of the time would you expect predictions to be exactly correct?
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question during the past 10 years minnesota pollution control agency has measured the concentration of chlorophyll-a
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a machine is designed to fill jars with 16 oz. of coffee. a consumer suspects that the machine is not filing the jars
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