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A furniture store is having a sale on sofas and you're going to buy one. The advertisers know that buyers get to the store and that 1 out of 4 buyers change to a more expensive sofa than the one in the sale advertisement. Let X be the cost of the sofa. What is the average cost of a sofa if the advertised sofa is $250 and the more expensive sofa is $ 375?
Write a substantive interpretation of the following unstandardized regression equation based on a sample of 743 city residents, where Y is a 10-point scale measuring the number of professional sporting events.
A standard deviation of 1.5 years. What is the probability that someone will keep a color TV fewer than 10 years before replacement?
Although the packet claims a germination rate of 92%, only 171 or 200 test seeds sprout. Is this evidence that the seeds have lost viability during a year in storage?
Is there evidence to suggest that the process average differs from the target value?
Compute the cofficient of determination. Compute the correlation coefficient between the price and the number of pages.
Determination of Nominal, Ordinal, Interval, Ratio.Temperature is an example of what level of measurement.
What percentage of the averages or medians of the sample will be greater than 140 seconds?
Research question: Are mean crash damages same for these 3 vehicles? Crash1 Crash Damage ($).
Monitoring the ecological health of the Everglades-the bottom temperatures are recorded at the Garfield Bight station and the mean of 19.7 degrees C is obtained for 62 temperatures on 62 different days.
A consumer organization estimates that over a 1-year period 17 percent of cars will require to be repaired once, 7 percent will need repairs twice, and 4 percent will require three or more repairs. What is the probability that a car chosen at rand..
If the organization's claim is correct, what is the probability of having a sample mean of or less for a random sample of this size?
A new restaurant with 123 seats is being planned. Studies show that 57% of the customers demand a smoke free area. How many seats sould be in the non-smoking area in order to be very sure (mean+3StandardDeviation) of having enough seating there?
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