**Question: ** Download the data set histidine.sav and use it to answer the research question: "Is there a mean difference in the 24-hour histidine excretion among men and women?" Use SPSS to complete the following calculations:

(1) Run a two-sample independent *t* test.

(2) Calculate a 95% CI for the mean difference in the 24-hour histidine excretion levels among men and women.

**Note: **Data Set: __Histidine.sav__

For problem 2, question #1, comment on which version of the *t *test we should use (equal variance or unequal variance) and why?

**Solution:**The solution consists of 201 words (2 pages)

**Deliverables:**Word Document