pls help me on this statistics question i need help quick thanks

A hospital reports that the mean number of sick days an employee takes per year is 10 days. Members of the hospital personnel department are beginning to not believe this figure. They randomly survey nine employees. The mean number of sick days of the sample is 8.4 and the standard deviation (SD) of the sample is calculated to be 3.8.

With = .05 for a 2-tailed test, is the sample mean significantly different from the hypothesized mean of 10 days (i.e., can the null hypothesis be rejected)? Answer this question by completing the following:

A) State the null hypothesis and alternative hypothesis

B) Calculate and state the Standard Error of the Mean (SEM)

C) State the calculated t-value

D) State the appropriate Table t-value

E) Make a final statement about your conclusion, ie. accept or reject null hypothesis and what does this actually mean?