Real Midterm with answers

# Real Midterm with answers - PART A TRUE/FALSE(1 mark each 1...

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The End PART A - TRUE/FALSE (1 mark each) 1. The Standardized Normal random variable has a mean of 1.0. A) True B) False 2. In Minitab, the Worksheet Window keeps a record of everything that you do. A) True B) False 3. The term "marginal probabilities" refers to probabilities that can not be accurately determined A) True B) False 4. If a Bernoulli process with =0.6 produces a success on the first trial, the probability of a success on the second trial is less than 0.6. A) True B) False 5. Mutually exclusive events cannot be statistically independent. A) True B) False 6. If P(A)=0.1, P(B)=0.2 and P(A B)=0.02, then A and B are statistically independent events. A) True B) False 7. A continuous variable may take on any value within its relevant range even though the measurement device may not be precise enough to record it. A) True B) False 8. Six sigma programs aim to have processes that operate at a 99.7% error-free level. A) True B) False

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The End 9. A population is a subset of measurements taken from a large group. 10. Labeling responses "true" or "false" creates nominal scaled data. 11. The standard deviation is defined as the positive square root of the variance. 12. In a sample size of 40, the sample mean is 15. In this case, the sum of all the observations in the sample is i x =600. A) True B) False 13. When A and B are mutually exclusive, P(A B) can be found by adding P(A) and P(B). 14. The uniform distribution has higher probabilities for small values of X than for larger values of X. 15. Flipping a coin is an example of a Bernoulli process. 16. The probability that there will be no heads in ten flips of a fair coin is 10 0.5 . A) True B) False
The End 17. In a binomial distribution, for any value of , an increase in n will not change the mean.

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