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Q1) Determine the special property of standard normal distribution, compared to other normal distributions?
a) The mean is 0 and the standard deviation is 1.
b) The total area under the normal distribution curve is equal to 1.00.
c) The curve is continuous.
d) The mean is located at the center of the distribution.
Q2) Determine the probability P(z > 0.78) by using standard normal distribution.
a) 0.2200
b) 0.7823
c) 0.7177
d) 0.2177
Q3) Determine the area under curve to the left of z = 1.69.
a) 0.4545
b) 0.4452
c) 0.9545
d) 0.9452
Q4) Determine the probability P(0.26 < z < 1.33) by using standard normal distribution.
a) 0.3056
b) 0.6943
c) 0.8057
d) 0.4600
Q5) For normal distribution with mean 5 and standard deviation 6, value 11 has a z value of
a) -1
b) 1
c) 2
d) 3
A sample of 100 observations has a mean of 2.99 and a standard deviation s equal to 0.5 Conduct the following test of hypotheses about the corresponding population mean at a level of significance of α = 0.2
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