Confidence interval is a measure of?
A. Accuracy
B. Precision
C. Error
D. All of above
Confidence interval should be ________?
A. Shorter
B. Wider
C. Large
D. Small
Normal distribution is a probability distribution of _____ random variable?
A. Continuous
B. Constant
C. Discrete
D. Normal
Normal distribution has ______ parameter?
A. Three
B. Two
C. Four
D. One
The quartile deviation is ____ (S.D.) is normal dist?
A. .6734
B. .7879
C. .6745
D. .4567
In normal distribution u2 = S2 and u4 =___________?
A. 3S2
B. 3S
C. 3S4
D. 4S2/x
The equation of standard normal distribution is f(z) ____?
A. 1/σ√2∏e 1/2×2
B. 1/σ√2∏e -1/2×2
C. 1/√2∏
D. 1/σ√2∏
Normal distribution has ____shaped?
A. u-shaped
B. Bell shaped
C. T-shaped
D. Normal shaped
For a normal distribution having µ = 241 and σ = 2 P (X≥235) is:_______?
A. 0.9986
B. 0.5
C. 0.475
D. 0.235
P(µ – σ≤x≤µ + σ)=_________?
A. .6826
B. .6743
C. .6745
D. .2345
The shape of normal distribution does depend upon _____ and variance?
A. x
B. S/σ2
C. u
D. 2 µ2
Normal distribution has ______?
A. 1 parameter
B. 2 parameter
C. 3 parameter
D. 4 parameter
