Required information An article presents voltage measurements for a sample of 66 industrial networks in Estonia. Assume the rated voltage for these networks is 232 V. The sample mean voltage was 231.5 V with a standard deviation of 2.19 V. Let ? represent the population mean voltage for these networks. Find the P-value for testing H0 : ? = 232 versus H1 : ? ? 232. Round the answer to four decimal places.
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First, we need to find the test statistic (t-score) for the sample mean. We can use the formula: t = (sample mean - population mean) / (standard deviation / sqrt(sample size)) t = (231.5 - 232) / (2.19 / sqrt(66)) Show more…
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