We randomly select two shirts one after the other from a


Q1. We randomly select two shirts, one after the other, from a carton containing twelve shirts, three of which have blemishes. Find the probability that

(i) both of them will have blemishes

(ii) both of them will be without blemishes

(iii) one will be with blemishes and one without blemishes (10)

Q2. From the following results, obtain the two regression lines and estimate the yield of crops when rainfall 29 cms.

                Y Yield (in cm)              X Rainfall (in kg.)

Mean           508.4                              26.7

S.D.            36.8                                4.6

Co-efficient of correlation between yield an rainfall = 0.52.

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Basic Statistics: We randomly select two shirts one after the other from a
Reference No:- TGS01671874

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