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Question: Remember our sample of pages in this book from the earlier Just Checking? 48% of pages had a data display. 27% of pages had an equation, and 7% of pages had both a data display and an equation.
a) Make a contingency table for the variables display and equation.
b) What is the probability that a randomly selected sample page with an equation also had a data display?
c) Are having an equation and having a data display disjoint events?
d) Are having an equation and having a data display independent events?
The results of a calculus exam are normally distributed with a mean of 76 and a standard deviation of 6. Find the percentage of students that scored above 70.
Use the binomial formula to find the probability of 3 or more heads.- Compare your answer with the one that you would obtain if the coin were fair.
The lengths of pregnancies are normally distributed with a mean of 264 days and a standard deviation of 25 days. If 100 women are randomly selected, find the probability that they have a mean pregnancy between 264 days and 266 days.
Recognizing that the hike to the campsite is a long one, a limit of 35 pounds has been set as the maximum total weight of the items to be carried. Formulate this as a LP problem to maximize the total utility of items carried.
Randomly chosen circulated nickels were weighed by statistics student Dorothy Duffy as an independent project. Nickels were weighed on a Mettler PE 360 Delta Range scale, accurate to 0.001 gram. The coin's age is the difference between the current ye..
He asks you to develop a proposal for the study and submit it to him. Develop the management-research question hierarchy that will help you to develop a specific proposal.
Calculate the mean, median, mode and standard deviation for the salaries rounded up to the nearest thousand of dollars
in how many ways can 12 indistinguishable muffins and 1 cookie be distributed among three children in such a way that
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An observational study is conducted to investigate the association between age and total serum cholesterol. The correlation is estimated at r=0.35. The study involves n=125 participants and the mean (std dev) age is 44.3 (10.0) years with an age r..
Do these data suggest that the amount of time devoted to urban problems in acceptance speeches of newly elected representatives to the U.S. Congress differ according to whether they come from rural or urban districts?
question a recent study indicated that 29 of 100 women over age 55 in the study were widows.a how large a sample
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