27. Let X ~ Nor(,x,x). Let us say we know o = 4. Let =0.05, n =25. Ho : x =12 and HA : x 12 Assume the sample is from a normal population,we have a simple (pseudo- random sample from a normal population, the observations are independent, and there was no error of measurement of the quantity. The results were X = 14, Sx ~ 3. Finish the study. Decide on the correct distribution to be used. Distribution:
Find the approximate (1DPA) critical value for the test.
Critical value:
Compute the approximate value (1DPA) from the results and the assumptions allowed to be made test. Computed value:
Is it reject or fail to reject H,?
Answer:
Why? (please explain in a sentence)
28. Let X ~ Nor(,x,x). We have two data sets (A and B) from the population.Let a=0.05,nA=10,nB =12. Ho:x=Xs and HA:x#Xs Assume the sample is from a normal population, we have a simple (pseudo-) random sample from a normal population, the observations are independent. assume equal variances, and there was no error of measurement of the quantity. Let the results of a study be as follows: X4 = 14, X = 15,Sx ~ 0.5, Sxs ~ 0.5 and Spooled ~ 1. Finish the study. Decide on the correct distribution to be used Distribution: Find the approximate (1DPA) critical value for the test. Critical value:
Compute the approximate value (1DPA) from the results and the assumptions allowed to be made test. Computed value:
Is it reject or fail to reject Ho?
Answer:
