25 female patients were randomly selected, and their Hb of blood were tested. The mean of Hb is 150g/L, and the standard deviation is 16.5g/L. Do these data provide sufficient evidence to indicate...

Extracted text: 25 female patients were randomly selected, and their Hb of blood were tested. The mean of Hb is 150g/L, and the standard deviation is 16.5g/L. Do these data provide sufficient evidence to indicate that the mean of Hb of all of patients who suffer from the same disease is different from the mean of Hb of normal female (The mean of Hb of normal female is 132g/L). ( ) 3. Which statistical test should be used in this example? A. Two independent samples ttest. B. Paired ttest. C. One sample ttest D. McNemar test. ( 0 4. Which is the alternative hypothesis of this example? В. О4132 ) 5. The formula of df (degree of freedom) is: C. n1+n2-1 A. 0;=132 C. Og=0 D. Od#0 A. n-1 B. n-2 D. n1+n2-2