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Randomly selected 50 people in Manhattan were asked how much they spend for lunch. Results of the poll are shown in this graph. Based on this graph, what is percentage of people in Manhattan who spend more than $20 per lunch?
State the research question and statistical null and alternative hypotheses; and Explain why this test is appropriate and why the correlation, t-test, regression, or ANOVA is not appropriate.
In 2001, an estimated 78% of executives believed that age bias was a serious problem. In a 2004, 82% of the executives surveyed considered age bias a serious problem.
Is opinion equally divided on this legislative issue? Use α = 0.05. What is the p-value? What sampling assumptions are being made?
a certain segment of the sky contains z stars. each star is either a red giant with probability 13 or a white dwarf
At a car rental agency, 0.34 of the cars are returned on time. A sample of 11 car rentals is studied. What is the probability that more than 3 of them are retur
According to the U.S. Bureau of the Census, 75% of adults regularly drank alcohol in 1985. An investigator predicts that fewer adults drink now than drank then.
What is the procedure involved in performing hypothesis tests and discuss the business uses of time series forecasting.
How many different triple-scoop cones can be made if the flavors can be duplicated?
1. define in your words nominal ordinal and interval-ratio levels of measurement. provide 3 examples for each level of
Let X1,..., X4 be binary. Draw the independence graphs corresponding to the following log-linear models. Also, identify whether each is graphical and/or hierarchical (or neither).
jeffs bowling scores are approximately normally distributed with mean 160 and standard deviation 13 while jacks scores
20% of teenagers in a small town say they like reading news online. Suppose you randomly select 7 teenagers from the town and ask them whether or not they enjoy reading news online. Find the probability that at least 3 say they enjoy reading news ..
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