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Assume a Normal Distribution with mean µ = 98.7 and IQR = 0.50. Find the standard deviation.
a study of various news home pages reports that the mean number of bad links per home page is 0.4. if the errors occur
Using the rectangle sheet from the earlier "Random Rectangles" activity and a random number table, draw as many samples of size 5 as required in order.
Based on the results of the test, can the consumer group report in its next publication that the tires last less than 60,000 miles?
Imagine that the weather forecaster predicts that next Friday's temperature will be 82 degrees F. How many students would you expect to attend class on that day?
Suppose you conduct survey asking people if they support something or if they like some product or if they watch some TV-show.
Find a two-sided 90% confidence interval for µ. One can be 90% confident that the true average blood pressure µ for that person is between a and b.
A numerical error in preparing his or her income tax return. If 10000 forms are selected at random and examined. Find the probability that 6,7,8, of the forms contain an error.
A researcher wants to see if urban, suburban and rural communities differ in terms of the support for food banks. The researcher randomly chose 4000 food banks from around the country and interviewed the director of each. Calculate the degrees of ..
Are the following data consistent with the ideas presented by the researchers? Summarize your conclusions in a few sentences.
The facts of the question are that a fast food chain claims their regular hamburgers have an average of 310 calories.
a mechanic sells a brand of automobile tire that has a life expectancy that is normally distributed with a mean life of
Technology for teaching statistics The Brigham Young University (BYU) statistics department is performing experiments to compare teaching methods.
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