EXAMPLE 1 Calculating a point estimate
Farmers work hard to increase the yield of their acreage. Yield represents the number of bushels of a crop produced per acre. Suppose we are interested in estimating the population mean yield for winter wheat across all 50 states. Shown here is the mean July 2014 yield for a sample of five states, in bushels, as published by the U.S. Department of Agriculture (USDA).
State | Yield (bushels) |
---|---|
California | 85 |
Georgia | 55 |
Illinois | 67 |
Ohio | 68 |
Texas | 25 |
429
Solution
NOW YOU CAN DO
Exercises 11–14.