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McDonald's Corporation has reported the following values for total revenues and net income during the 1998 to 2005 period. All data are in billions of dollars:
Determine the least-squares regression equation line for estimating net income and interpret its slope. For a year in which total revenues are $18.0 billion, estimate the net income for that year.
Draw a scatterplot indicating a strong negative relationship between the variables pf income and mental illness. Be sure to label the axes correctly.
A census by the county dog control officer found that 18% of homes kept one dog as a pet, 4% had two dogs, and 1% had three or more. If a salesman visits two homes selected
Arbitron Media Research Inc, conducted a study of the radio listening habits of men and women. One facet of the study involved the mean listening time. It was discovered tha
A recent poll of 700 people who work indoors found that 278 smoke. If the researchers want to be 98% confident of their results to within 3.5 percentage points, how large a
Suppose the number of tickets written per day follows a Poisson dictribution with mean of 6.5 tickets per day. Interpret the value of the mean.
Baseball player Mark McGwire broke a record when he hit 70 home runs in the 1998 season. During that season, he was at bat 509 times. If one of those "at bats" is randomly s
Suppose the probability that a carton of eggs will contain at least one broken egg is 1/3. use a simulation of 20 trials to find the probability that the next three cartons
The probability of error in the transmission of a binary digit over a communication  channel is 1=103. Write an expression for the exact probability of more than 3 errors
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