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A bag contains three dice, two of which are somewhat unusual: die A is a regular die whose faces show 1,2,3,4,5 and 6. Die B has a 4 on all 6 sides, and the faces of die C are 2,2,4,4,6 and 6. Suppose that a die is randomly selected, rolled, and comes up a 4. If the same die is rerolled, what is the probability that it is again a 4?
What are the odds that a container will be shipped even though it contains 2 defectives if the sample size is 9.
Construct a 95% Confidence Interval of the difference in proportions. Do not assume equal variances for this calculation.
In the binomial example with Melissa Bailey, what is the probability that she will be gone six or more weekends?
What is the null hypothesis? What is the alternative hypothesis? What is the value of the standard score for the sample proportion?
If a sample of 30 fruit flies is taken from this population, what is the probability it will have a sample mean life span of greater than 48 days?
An industrial sewing machine uses ball bearings that are targeted to have a diameter of 0.75 inch. The lower and upper specification limits.
Suppose the scales underreport weight by 10 pounds. What is the mean and standard deviation of the correct weight in pounds?
Let a be a fixed vector in R2. A mapping of the form L(x) = x+a is called a translation. Show that if a does not equal 0, then L is not a linear transformation. Describe or illustrate geometrically the effect of the translation.
Complete a single histogram on all four of these test scored and analyze the results. a. What do these histograms tell you about the overall grades for each of these exams?
On the fictitious game show "Marginal Analysis for Everyone" the host subjects contestants to unusual tests of mental skill. On one, a contestant may choose one of two identical envelopes labeled A and B, each of which contains an unknown amount o..
Over many years, rainfall totals for Sacramento, CA in January ranged from a low of about 0.05 inch to a high of about 19.5 inches.
He finds their mean weight to be 17.78 ounces with a standard deviation of 0.4 ounces. Are the cereal boxes lighter than they should be? Let α = 0.01.
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