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Question: What does a z-score measure? What does standardizing a normal distribution do to the mean? Is X ~ N(0, 1) a standardized normal distribution? Why or why not? What is the z-score of x = 12, if it is two standard deviations to the right of the mean? What is the z-score of x = 9, if it is 1.5 standard deviations to the left of the mean?
at ajax spring water a half-liter bottle of soft drink is supposed to contain a mean of 520 ml. the filling process
when a survey calls residential telephone numbers at random only 25 of the calls reach a live person. you watch the
They plan to set up a radar trap and check the speeds of 80 randomly selected cars. Can this distribution be approximated by a normal curve?
How and why could an Alabama Paradox occur? Explain how applying the Huntington-Hill apportionment method helps to avoid an Alabama Paradox. Calculate the absolute and relative unfairness of this apportionment.
Explain carefully why this makes sense, using the fact that a much higher percentage of Nebraska eighth-graders are white.
question a dam can be lowered by 4 meters using spillway a in 4 hours or by spillway b in 6 hours also lowering the
Given f(x) = 0.1 for 10 ≤x≤20. The mean of the distribution is 15 and the standard deviation is 2.89. Find the probability that x falls between 12 and 15.
Suppose the author plans to continue submitting papers to the journal indefinitely until one is accepted. What is the probability that at least one paper will eventually be accepted by the journal?
Calculate the standard deviation and what is the probability you will have exactly 80 flights on time - What level would represent the 10th percentile
in a linear programming problem the binding constraints for the optimal solution are5x1 3x2 302x1 5x2 20which of
What is the appropriate procedure to test for a significant difference in means between the two groups? Implement the procedure in problem using the critical value method
according to the american lung association 90 of adult smokers started smoking before turning 21 years old. ten smokers
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