Intraocular pressure is thought to play a major role in the

Intraocular pressure is thought to play a major role in the development and progression of glaucoma, while additional studies have shown that blood pressure is also related to the progression of the disease. In a group of 15 Latinos with glaucoma, a clinical researcher finds the sample mean systolic blood pressure is 133.5 mm Hg and a sample standard deviation of 23.8 mm Hg. The distribution of systolic blood pressure in a general Latino population is normal with a mean of 122.9 mm Hg. Use a one-sample z or t test to ascertain if there is a statistical difference in mean systolic blood pressure between the sample with glaucoma and the general population. Use the two-sided alternative hypothesis for your test.  

Step 1: Determine the critical region (i.e., ± critical value z or ± critical value t).

Step 2: Select and compute the appropriate test statistic formula (z or t) (i.e., the z or the t that corresponds to the location of the sample mean in relation to the population mean) (NOTE: do not use the 95% confidence interval in this step to determine significance). (2)

Step 3: Compare the test statistic value to the critical values, and state the conclusion in a professional manner. Also, be sure to report the test statistic and either p<.05 (which means reject the null or statistical significance) or p.05 (which means fail to reject the null or no statistical significance) in parentheses at the end of the sentence. (2)

Conclusion (1):

Solution