Question

Researchers wish to know if the data they have collected provide sufficient evidence to indicate a difference in mean serum uric acid levels between normal individuals and individuals with Down’s syndrome The data consist of serum uric acid readings on 12 individuals with Down’s syndrome and 15 individuals without Down’s syndrome. The means are x1=4.5 mg/100 ml for those with Down’s syndrome and x2=3.4 mg/100 ml for those without. s₁ = 1.0 and s₂ = 1.2.

a. State whether the test is:

i) a two-sample t-test (independent samples)

ii) a matched pairs

iii) a two sample proportion test

b. Write H0 and H1

c. Using Minitab, list the test statistic the p-value your conclusion: reject H0 or do not reject H0. Note: if α is not provided, use a 0.05 significance level

d.   Write a sentence that explains your conclusion in context with the claim. Include the significance level and p-value in this sentence.

e.   Copy and paste the relevant Minitab output into the document. Answers alone are sufficient, you do not need to copy the exercise into the document.

Answer 1