If a sample of 25 observations reveals a sample mean of 52 and a sample variance is 4.2. Test that the population mean is 65 against that it is some other value. Use the 0.01 significance level. Claim is true if calculated value is less than or greater than tabulated value
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null hypothesis when the null hypothesis is true.) ... We find that the calculated test statistic is 2.08, meaning that the sample mean is 2.08 ... If we wished to use the p-value system of reaching a conclusion we would calculate the ... and it shows that it is smaller than the hatched area which is the alpha level of 0.05.
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