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The average family income in the town of Seneville is $45 000, with a standard deviation of $9000. Assuming that family income is normally distributed, determine the income level below which 80% of the families in this town earn.
Determine point estimate of population mean? By using 90% confidence, determine the margin of error?
Suppose that the following data were obtained for a collection of archaeological sites in New Mexico: Calculate the sample correlation coefficient r.
Please assist regarding an index based on how people feel about the economy. In this case, the base was 1985 and set at 100.
for a group of 120 people assuming that each person is equally likely to have a birthday on each of 365 days in the
assume the readings on thermometers are normally distributed with a mean of 0 degree c and a standard deviation of 1.00
Telephone calls enter a college switchboard at a mean rate of 2/3 call per minute according to Poisson process. Let X denote the waiting time until the tenth call arrives. what are the moment-generating function, mean and variance of X?
Mattel Corporation produces a remote-controlled car that requires three AA batteries. The mean life of these batteries in this product is 35 hours with a standard deviation of 5.5 hours. As part of its testing program Sony tests samples of 16 batt..
Why is the F distribution important? How do you determine if a significant difference exists among the groups in ANOVA? How do you determine differences between the groups in ANOVA?
A cyclist traveled at a rate of 32 mph to visit a nearby town. The cyclist averaged 10 mph on the return trip. If the round trip took 6.3 hours, find the distance to the nearby town.
question the gallup organization contacts 1709 adult men who are 40 to 60 yrs of age and live in the united states
If WH is implicated, the firm may face a reputation loss even if no lawsuit is filed. For what values of that reputation loss would issuing the recall be preferable, in terms of EMV?
question 1 a persons blood glucose level and diabetes are closely related. let x be a random variable measured in
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