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കബ 0൦ 551
B:-power function
ടോജോ

D:-none of the above
Correct Answer:- Option B

Question77:-A population is distributed as N(x 1 ).0 A sarple &f 576 items has a mean 4.7. The value of the statistic Z to 1257 ഒട

۸3
B:28.125

3.75

D:none of the above.
Correct Answer:- OptionC

Question78:-A sample of 12 specimen taken from a normal population is expected to have a mean 50 mg/cc. The sample has a mean 64 mg/cc with a variance of 25. To test H :

42495
ம்‌
ജേ
നം
Correct Answer:- Option-D
Question79:Tosting Ho:u =1500 against u<1500 leads to
Avonesided lower tailed test
Be-one-sided upper tailed test
Cotwo-tailed test
De-all the above
Correct Answer:- Option-A

Question80:The mean difference betwoen 9 paired obsorvations is 15.0 and the standard deviation of differences is 5.0. The value of statistic t is

4:27

നം
Correct Answer:- Option B
ange of statistic t is

Correct Answer:- Option B
Questiong2:Given the following eight sample values -4, -3, -3, 0, 3, 3,4,4 the value of student's tstatistc to test Ho : ८ =
۸3
30.97
೦೫3.30
0 1
Correct Answer:- Option-D
Questiong3+In a contingency table, the expected frequencies are computed under
‘Acnull hypothesis Iy

Balternative hypothesis 1
0५० ८१५ 0०४
D:no consideration of hypothesis
Correct Answer:- Option-A
Question8 4= The term regression was introduced by
AcRAFisher
BeSir Francis Galton
ചേ Pearson
D-none of the above
Correct Answer:- Option 8.
QuestionB5-1 fyy ஹம்‌ நியு are two regression coofficients they have
Acsame sign
Bropposite sign
Ceither same or opposite signs
D:nothing can be said
Correct Answer:- Option A
Question86: The lines of regression intersact at the point
۸-00
8൫൭)
ഹേ
20೨೫
Correct Answer:- Option D
Question7:1fa constant 50 is subtracted from cach of the value of X and , the regression coefficient is
Acreduced by 50

Bt heoignal णवत

Cuincreased by 50
D:not changed
Correct Answer:- Option-D
Questiong8-1f is the simple correlation coefficient, the quantity * is known as
Acocfficient of determination
Bu-coefficient of non-determination
೦೦೦೦೫310೫೭ of alienation
D:-none of the above
Correct Answer:- Option-A
Questiona9:The range of simple correlation cocfficient is
۸-0 0
‏عم ساب‎
೦:೦೫ 1
Diltol
Correct Answer:- Option-D
Question90:The hypothesis for a specific known value of can be tested by
கமல்‌
छट

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