Two-sided test Hypothesis

#1
2. In 18 patients with Everley's syndrome, the mean level of plasma phosphate was 1.7 mmol/l (millimoles per liter) with a standard deviation of 0.8 mmol/l. If the mean level in the general population is 1.2 mmol/l, is there a statistically significant difference between the general population mean and these 18 patients' mean? Make sure to go through all the steps for hypothesis testing: state the appropriate test to use, state the hypotheses, and then do the calculations and providing a brief explanation of your results. Conduct a two-sided test and show your calculations for partial credit if applicable.
 

spunky

Doesn't actually exist
#2
Hi! :welcome: We are glad that you posted here! This looks like a homework question though. Our homework help policy can be found here. We mainly just want to see what you have tried so far and that you have put some effort into the problem. I would also suggest checking out this thread for some guidelines on smart posting behavior that can help you get answers that are better much more quickly.