An inspector inspects large truckloads of potatoes to determine the proportion pin the shipment with major...

   

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An inspector inspects large truckloads of potatoes to determine the proportion pin the shipment with major defects prior to using the potatoes to make potato chips. Unless there is clear evidence that this proportion is less than 0.10, she will reject the shipment. To reach a decision she will test the hypotheses Ho : P= 0.10, Hạ : P<0.10 using the large sample test for a population proportion. To do so, she selects an SRA of 100 potatoes from the over 2000 potatoes on the truck. Suppose that 6 of the potatoes sampled are found to have major defects. The P-value of her test is a. 0.4082. b. 0.0918. c. 0.0400. d. less than 0.0002. Which of the following assumptions for inference about a proportion using a hypothesis test are violated? a. The data are an SRS from the population of interest. b. The population is at least 10 times as large as the sample. c. nis so large that both npo and n(1 - po) are 10 or more, where po is the proportion with major defects if the null hypothesis is true. d. There appear to be no violations. A 95% plus four confidence interval for the true proportion of potatoes in the truck that have major defects is a. 0.06 ± 0.026 b. 0.06 + 0.051 c. 0.077 + 0.026 d. 0.077 + 0.051 An inspector inspects large truckloads of potatoes to determine the proportion pin the shipment with major defects prior to using the potatoes to make potato chips. Unless there is clear evidence that this proportion is less than 0.10, she will reject the shipment. To reach a decision she will test the hypotheses Ho : P= 0.10, Hạ : P<0.10 using the large sample test for a population proportion. To do so, she selects an SRA of 100 potatoes from the over 2000 potatoes on the truck. Suppose that 6 of the potatoes sampled are found to have major defects. The P-value of her test is a. 0.4082. b. 0.0918. c. 0.0400. d. less than 0.0002. Which of the following assumptions for inference about a proportion using a hypothesis test are violated? a. The data are an SRS from the population of interest. b. The population is at least 10 times as large as the sample. c. nis so large that both npo and n(1 - po) are 10 or more, where po is the proportion with major defects if the null hypothesis is true. d. There appear to be no violations. A 95% plus four confidence interval for the true proportion of potatoes in the truck that have major defects is a. 0.06 ± 0.026 b. 0.06 + 0.051 c. 0.077 + 0.026 d. 0.077 + 0.051

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