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According to Pew Research Center, 71% of Internet users accessed video-sharing sites in August2011. A random sample of 50 Internet users was selected. Using the normal approximation to thebinomial distribution, what is the probability that 37 or more people from this sample accessvideo-sharing sites?
What is the expected number of wins for the month of November?
What is the probability that a diner is an undergraduate and has bought a meal and what is the probability that someone who has bought a meal is a postgraduate?
a confidence interval with a 95 confidence level for the proportion of voters who are in favor of the proposition in a
What is the response variable?
Three years ago, the admissions office for Ivy College began using exponential smoothing with a smoothing constant of 0.25 to forecast the number of applications for admission each year.
The engineer in a widget factory wants to test out a new form of raw materials. So a batch of widgets are made in the old manner as a control group and then a batch are made with the new materials as a comparison.
1.in the table below we examine the relationship between final grade and the reported hours per week each student said
Assuming that the calls are Poisson-distributed, calculate the probability that the consultant receives at least 2 calls during any 30 minute period.
Assume independent events. Why might the assumption of independence be violated? (b) Why might a driver be tempted not to use a seat belt "just on this trip"?
a state school administrator says that the standard deviation of test scores for eighth grade students who took a u.s.
Determine the median maintenance cost. Based on the median, develop a contingency table with bus manufacturer as one variable and whether the maintenance cost was above or below the median as the other variable.
Choose one of the options below that explains what information is provided in the interval that is not in the significance test results:
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