Type II error in hypothesis testing is
A. acceptance of the null hypothesis when it is false and should be rejected
B. rejection of the null hypothesis when it is true and should be accepted
C. rejection of the null hypothesis when it is false and should be rejected
D. acceptance of the null hypothesis when it is true and should be accepted
Answer: Option A
This Question Belongs to Engineering Maths >> Probability And Statistics
A coin is tossed 4 times. What is the probability of getting heads exactly 3 times?
A. $$\frac{1}{4}$$
B. $$\frac{3}{8}$$
C. $$\frac{1}{2}$$
D. $$\frac{3}{4}$$
A. 1 and $$\frac{1}{3}$$
B. $$\frac{1}{3}$$ and 1
C. 1 and $$\frac{4}{3}$$
D. $$\frac{1}{3}$$ and $$\frac{4}{3}$$
A. E(XY) = E(X) E(Y)
B. Cov (X, Y) = 0
C. Var (X + Y) = Var (X) + Var (Y)
D. E(X2Y2) = (E(X))2 (E(Y))2
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