People prefer to use the median as an estimator for the population mean because it is more efficient than the sample mean. True or False The p-value of a test is the probability of obtaining the test statistic or a value more extreme if the null hypothesis is true, and it is NOT the same as the level of significance of an hypothesis test. True or False
Added by Blake G.
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A hypothesis test for a population mean is to be performed at the 5% level of significance. The population standard deviation is known. The hypotheses are H0 : μ = 80 Ha : μ ≠80. A 95% confidence interval for μ is also constructed. True or false, if 80 lies within the 95% confidence interval, then the null hypothesis will be rejected. True False
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