Given that X~N(0,1) find the value of x such that the area of two tail is 0.05
Given that X~N(0,1) find the value of x such that the area of two tail is...
Find the t-value such that the area in the right tail is 0.05 with 34 degrees of freedom. O A. 1.691 OB. -1.691 O c. 2.728 OD. 1.694
(a) Find the t-value such that the area in the right tail is 0.20 with 13 degrees of freedom (b) Find the t-value such that the area in the right tail is 0.25 with 27 degrees of freedom (c) Find the t-value such that the area left of the t-value is 0.02 with 24 degrees of freedom. d) Find the critical t-value that corresponds to 80% confidence. Assume 27 degrees of freedom.
(a) Find the t-value such that the area in the right tail is 0.05 with 29 degrees of freedom. nothing Round to three decimal places as needed.)( b) Find the t-value such that the area in the right tail is 0.10 with 66 degrees of freedom. nothing (Round to three decimal places as needed.)(c) Find the t-value such that the area left of the t-value is 0.25 with 25 degrees of freedom. [Hint: Use symmetry.] nothing (Round to three decimal...
?(a) Find the? t-value such that the area in the right tail is 0.20 with 21 degrees of freedom. ?(Round to three decimal places as? needed.) ?(b) Find the? t-value such that the area in the right tail is 0.15 with 16 degrees of freedom.?(Round to three decimal places as? needed.) ?(c) Find the? t-value such that the area left of the? t-value is 0.005 with 19 degrees of freedom.? [Hint: Use? symmetry.] ?(Round to three decimal places as? needed.)...
Find the t-value that has an area in the lower tail of .10 when n=18. Group of answer choices 1.328 -1.328 1.333 1.330 -1.333 -1.330 Suppose a 95% confidence level has a value of ta/2 =2.003. What sample size was used in generating this confidence interval? Group of answer choices 56 None of these 5 6 55 57
Q4) Let X and Y be two independent N(0,1) random variable and 10 ei Find the covariance of Z and W.WE3-Y Q4) Let X and Y be two independent N(0,1) random variable and 10 ei Find the covariance of Z and W.WE3-Y
8. Let X.(i-12) be independent N(0,1) random variables. a. Find the value of c such that P ( (X1 + X2尸/( X2-X)2 < c ) =.90 b. Find P(2 X1 -3 X21.5) c. Find 95th percentile of the distribution of Y-2X -3X2
Draw a picture and find the area for a N(0,1) density between z = −0.75 and z = −1.25
Given that X|Y = y ~ Binomial(n, y) for any y € (0,1) and Y ~ U(0,1), find the marginal pmf of X. Hint: Px(x) = 3% [Px\y(x\y)fy(y)]dy.
8. Let X (i-1,2) be independent N(0,1) random variables. a. Find the value of c such that P ( (X1 + X2 )2/( X2 -X1)2 < c ) =.90 b. Find P(2 X1 -3 X2< 1.5) c. Find 95th percentile of the distribution of Y-2 X1 -3 X2