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1) P95 means _____? a. The central 95% area b. The point above above which95% area lies c. The point above below which 95% area lies d. Both (a) and (b) but not (c)
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2) If β1 = 0 it means the distribution is _______________? a. Symmetrical b. + vely skewed c. -vely skewed d. Non of these
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3) The maximum of function is at_______________? a. X = σ2 b. X = µ c. X = µ + σ d. X = 0
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4) As the normal distribution is symmetrical, its mean, median and mode are:____________? a. Coincide b. Not equal c. Different
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5) In a standard normal distribution z = 0 corresponds to _____________? a. Mean b. S.D. c. S.D. d. Q.D.
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6) N(µ, 2σ) means normally distribution with mean u and variance2σ then (3σ, 4) means _____________? a. 46 b. 76 c. 76 d. 47
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7) The range of normal distribution lies between _________? a. -∞ to +∞ b. 0 to ∞ c. -∞ to 0 d. None of these
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8) 100% of values lies in the limits are equal to ______________? a. 40 and 60 b. 20 and 70 c. 20 and 30 d. 20 and 80
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9) Normal distribution has ___________? a. 1 parameter b. 2 parameter c. 3 parameter d. 4 parameter
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10) The shape of normal distribution does depend upon _____ and variance? a. x b. S/σ2 c. u d. 2 µ2
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11) P(µ – σ≤x≤µ + σ)=_________? a. .6826 b. .6743 c. .6745 d. .2345
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12) 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
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13) Normal distribution has ____shaped? a. u-shaped b. Bell shaped c. T-shaped d. Normal shaped
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14) 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∏
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15) In normal distribution u2 = S2 and u4 =___________? a. 3S2 b. 3S c. 3S4 d. 4S2/x
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16) The quartile deviation is ____ (S.D.) is normal dist? a. .6734 b. .7879 c. .6745 d. .4567
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17) Normal distribution has ______ parameter? a. Three b. Two c. Four d. One
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18) Normal distribution is a probability distribution of _____ random variable? a. Continuous b. Constant c. Discrete d. Normal
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