Mathematics, 14.03.2020 05:22 kenoknox
The weights of the apples grown on an orchard are normally distributed. The mean weight has been m0 = 9.500 ounces. Because of the inclement weather this year, the farmer would like to know if the mean weight has decreased. A random sample of n = 16 apples is selected. The sample mean is x = 9.320 ounces and the sample standard deviation is s = 0.18 ounces. A test needs to be conducted to test if the population mean has decreased at a significance level a = 0.05 .
1. The null and alternative hypotheses should be
2. Using the action limits to set up the decision rule, the decision rule should be
3. The test statistic of this test is
4. The conclusion of this test should be
Answers: 3
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