SOLUTION: Which of the following would be an appropriate alternative hypothesis? The population mean is equal to 3.4. The population mean is greater than 3.4. The samp

"The population mean is greater than 3.4."   <--correct answer

Only null hypotheses claim that a population mean EQUALS something.

About sample means. We never make claims about a sample mean in a
hypothesis, because that's something we calculate whenever we take 
a sample.  We use a sample mean to make inferences about the 
population mean.

Edwin