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For the nations and household saving rates in Exer- cise 2.69, and using the data in file XR02069,
a. Construct a scatter diagram using the household saving rates in the United States and Germany as the two variables. It doesn't really matter which one you con- sider to be the independent variable. In the years when U.S. saving rates were higher, did those in Germany seem to be higher as well?
b. Fit a linear equation to the scatter diagram. Is the slope positive or is it negative? Is the sign of the slope consis- tent with your intuitive observation in part (a)?
"Use the data in the following payoff matrix and regret matrix to answer the following questions. What is the optimal decision regarding at which location(s) to purchase property using the MAXIMIN decision rule?
A driver hired at the beginning of a year can be used to meet the current year's requirements and is paid full salary for the current year. Determine how to minimize the bus company's salary, hiring, and firing costs over the next 5 years.
Probability the second truck is available is .50, and the probability that both trucks are available is .30. What is the probability neither truck is available?
A psychiatrist hires you to study whether her clients self-disclosed more while sitting in an easy chair or lying down on a couch. All clients had previously agreed to allow the sessions to be videotaped for research purposes.
Let X equal the number of "ones" if a fair dice is tossed two independent times by someone out in the hall. If X=x that person gives the player a bowl consisting of 10-3x red chips and 3x white chips.
A large industrial firm uses 3 local motels to provide overnight accommodations for its clients. From past experience it is known that 20%: of the clients are assigned rooms at the Ramada Inn, 50% at the Sheraton, and 30% at the Lake view Motor Lodge..
Let T have the exponential distribution with parameter lambda, and let Y=Sqroot(T).
Let A be the adjacency matrix of a regular graph of order v and valency k. Let J be the all-ones matrix of the same order. Show that
Number of miles flown in a One- year period by the sample of "frequent flyers" was recorded. Is this a grouped or an ungrouped frequency distribution?
find the two standard scores z that correspond to the following. enter your answers from smallest to largest. give your
510 people were asked which of four fast food restaurant were their favorite. Determine if there is a preference for any one place over any other.
Suppose that these 49 patients constitute the random sample, and that population is normally distributed with standard deviation of 10. Calculate the 95% confidence interval for heartbeats per minutes in population.
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