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Below is the data from an agricultural experiment. The purpose of the study was to see how the yield of corn changes as we change the planting rate (plants per acre).
Plants per acre Yield (bushels per acre)12,000 150.1 113.0 118.4 142.616,000 166.9 120.7 135.2 149.820,000 165.3 130.1 139.6 149.924,000 134.7 138.4 156.128,000 119.0 150.5
Make a scatterplot of the data to help you answer the next questions. (Use a scale of yields from 100 to 200 bushels per acre. You will need to repeat each planting rate to match the number of yields shown.)Data set
Find the least-squares regression line for predicting yield from planting rate and add this line to your plot. Choose the correct equation for the least-sqruares regression line.
The US Mint selects ten pennies from the production line to test the hypothesis that the mean weight of each penny is 5 grams. The normally-distributed weights (in grams) of these pennies are as follows:
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A tire company made a sampling distribution on one of its brands of tires and determined that the tire had a mean life of 56,000 miles with a standard deviation of 18,100 miles.
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Suppose three unfair coins are tossed, a nickel, a dime, and a quarter. The probability of tossing a head on the nickel is 0.35; the probability of tossing a head on the dime is 0.20
The port of Trop can service only 1 ship at a time. However, there is mooring space for 3 more ships. Trop is a favorite port of call, but, if no mooring space is available the ships have to go to the next port.
This morning the office you are monitoring has eight office visits on the schedule. What is the probability that:
What is coefficient of determination? Calculate F statistic. (Hint: You must complete the table to answer the question.)
If the player does not win or lose on his second roll he continues to roll, using the same criteria given for the second roll.
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