6 Nationally An Average Of About 11 Of The Total U S Wheat Crop Is Destroyed Each Year By Hail Reference Agricultu 1 (31.32 KiB) Viewed 24 times
6 Nationally An Average Of About 11 Of The Total U S Wheat Crop Is Destroyed Each Year By Hail Reference Agricultu 2 (8.66 KiB) Viewed 24 times
6. Nationally, an average of about 11% of the total U.S. wheat crop is destroyed each year by hail (Reference: Agricultural Statistics, U.S. Department of Agriculture). An insurance company is studying wheat hail-damage claims in Weld County, Colorado. Let x be a random variable that represents the percentage of wheat crop in Weld County lost to hail. Assume that x has a normal distribution and a 5.0%. A random sample of 16 claims in Weld County gave the following data (% wheat crop lost to hail): 12 20 14 11 15 8 9 11 7 10 24 20 13 9 12 5 At a significance level of 1%, does this data indicate that the percentage of wheat crop lost to hail in Weld County is different from the national average? Use the P-value method.
14. Redo #6 using the critical region method.
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