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July 1st, 2014, 08:08 AM
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Indian Statistical Services exam Statistics I paper
I am searching here question paper for Indian Statistical Services exam Statistics I in a PDF file format ? Here I am providing you question paper for Indian Statistical Services exam Statistics I in a PDF file attached with it so you can get it easily A manufacturer of alkaline batteries expects that only 5% of his products are defective. A random sample of 300 batteries contained 10 defectives. Can we conclude the proportion of defectives in the entire lot is less than 0.5 at 5% level of significance ? The two regression lines between X and Y are 8X - 1OY + 66 = 0, 40X - 18Y = 2x4. The - - variance of X is 9. Find X, Y, oy , and p. Explain the method of testing normality by using chi-squared test. 4x1 0-d0 If Cov (q, Xj) = r. - , 1J i j = 1 2, 3, i # j, then show that 2 2 2 . (ii) rlz + + rI3 5 1 + 2r12r23 rI3 (i) Show that the arithmetic mean of (positive) regression coefficients is greater than the correlation coefficient. (ii) What is the value of the product of geometric mean of variances and the geometric mean of regression coefficients ? Define 'minimum mean square error' and 'best linear predictor'. Show that they coincide for the normal distribution. Last edited by Neelurk; March 13th, 2020 at 10:35 AM. |
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