An observation is drawn from an experimental distribution with mean θ, if the observation is found to be 2, and we test H0 : θ>1 against H1 : θ>1 with level e-3 then
For a trivariate distribution, if the correlation coefficients are r12 = r13 = r23 = r, -1 < r < 1, then r12.3 is:
Let x1,x2,....xn be a random sample of size n from N (µ , σ2) population where µ and σ are both unknown. For testing H0:µ = µ0 against H2:µ = µ1(±µ0) if one uses the test statistic
then H0 is rejected at level ∝
A coin is tossed repeatedly until a head appears. If 'p' be the probability of getting a head in any toss and x be the number of tosses required to get the first head then which of the following statement is true:
If the regression line of Y on X is Y =30 0.9X and the standard deviations are Sx = 2 and Sy = 9, then the value of the correlation coefficient rxy is :