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A random sample of 11 aneroid sphygmomanometersis tested for accuracy and the errors were recorded.The sample has a mean of -7 mmHgand standard deviation of
A random sample of 11 aneroid sphygmomanometersis tested for accuracy and the errors were recorded.The sample has a mean of -7 mmHgand standard deviation of 9.65 mmHg. Assume that the errors of aneroid sphygmomanometersfollow a normal distribution.
Use a 0.05 significance level with the sample data to test the claim that the sample is from a population with a standard deviation greater than 1.5 mmHg.Use the critical value method.
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