A. 1/σ√2∏e 1/2×2
B. 1/σ√2∏e -1/2×2
C. 1/√2∏
D. 1/σ√2∏
Related Mcqs:
- If the sampled population has a normal distribution, when is the sampling distribution of the sample mean X also a normal distribution ?
A. Only when the sample size is at least 100.
B. Only when the sample size is smaller than 30
C. Always
D. Only when the sample size is at least 30. - In a standard normal distribution z = 0 corresponds to _____________?
A. Mean
B. S.D.
C. M.D.
D. Q.D. - Normal distribution is a probability distribution of _____ random variable?
A. Continuous
B. Constant
C. Discrete
D. Normal - Normal distribution is the distribution of _______________?
A. Discrete r.v.
B. Continuous r.v.
C. Qualitative variable
D. Quantitative variable - Normal distribution is _____ distribution?
A. Symmetrical
B. non-symmetrical
C. + vely skewed
D. -vely skewed - Which of the following is a true statement for comparing the t distribution with standard normal ?
A. Greater the degree of freedom, the more the t-distribution resembles the standard normal distribution
B. The Normal Curve is symmetrical whereas the t-distribution are slightly skewed.
C. The proportion of area beyond a specific value of “t” is less than the proportion of normal curve
D. Non of these - If in a sampling distribution of X the sample size is 25, what assumption must hold for the sampling distribution of X to be normal ?
A. Population distribution is normal
B. μ1 = μx
C. Population distribution is uniform
D. σx = σx /√n - condition for applying Central Limit Theorem (CLT) which approximate the sampling distribution of the mean with a normal distribution is ?
A. n > 30
B. N(1 – p) > 5
C. 2 n 5
E. N < 30 - __________ of the distribution which is measured relative to the distribution known as Normal?
A. Skewed
B. Flatness
C. Normal
D. Moment - The value maximum ordinate of a standard normal curve at Z = 0 is:________?
A. 1
B. 0.5
C. 0.3989
D. None of these
