Determining probability that mean is less

Reference no: EM1315666

Q1) Mean and standard deviation of normal distribution is 100 and 15 respectively. Determine the probability that value is between 110 and 120.

a) 9404

b) 2179

c) 1382

d) 1596

Q2) Mean of normal distribution is 100 and standard deviation is 15. Determine the value of separating top 85% from the others.

a) 16.6

b) 44.8

c) 12.6

d) 84.4

Q3) If mean=14.4 inches and standard deviation=1.0 inches and we have normal probability distribution, what value separates 98% of population from the largest 2%?

a) inches

b) 83.5 inches

c) 98 inches

d) 16.5 inches

Q4) Mean=11.4 Standard deviation=2.6 Determine the probability that x is greater than 12, given we have normal distribution.

a) 4.9%

b) 40.9%

c) 49.0%

d) 409%

Q5) Mean=63.6 Standard deviation=2.5 If 36 data points are arbitrarily chosen, determine the probability that mean is less than 64.

a) 1685

b) 3815

c) 8315

d) 5183

Reference no: EM1315666

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