You would like to test Ho: mu = 240 against Ha: mu %26lt; 240 at a 0.05 level of significance. The population of interest is
approximately normally distributed with unknown variance. A random sample of 45 observations will be collected.
You can conclude that mu is less than 240 if the value of the test statistic is found to be -1.972This is a true or false question. Will someone please answer this question for me?
I do not understand it... sorry
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