(B) fo.z foro
(B) fo.z foro
(B) fo.z foro
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Section tr<br />
14. Which of the <strong>fo</strong>llov-'ing are conditions <strong>fo</strong>r a binomial experirnent'/<br />
Sarnptre Examination Two 35<br />
I. The number of trials n is a fixed number.<br />
II. T'he n trials are independent.<br />
IIi. The probabilifl of success p is equal to the probabilitS' of failure q'<br />
(A) i only<br />
(B) II only<br />
(C) III oniy<br />
(D) I and ll onl,r,<br />
(E) I, II. and III<br />
15. Which of the <strong>fo</strong>llowing is NOT true concerning sampling distributions?<br />
Answer<br />
r--]<br />
ll<br />
(A) If the sample size n is large, the sampling distribution of T, drawn from a normal<br />
population, is approximately normal.<br />
(B) The mean of the sampling distribution of p is equal to the population propor-tion<br />
t)<br />
(C) The mean of the sampling distribution of the difference of trvo means (x, - rr) is<br />
equal to the difference of the population means (l'L'- llr).<br />
(D) The standard deviation of the sampling distribution of I is (r1,6., where o is the<br />
population standard deviation.<br />
(E) The standard deviation of the sampling distribution of the differences of two<br />
means 6x,-z.is equal to the sum of the respective population standard deviations.<br />
Answer<br />
or reus<br />
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