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One piece of PVC is to be inserted inside another piece. The length of the first piece is normally distributed with a mean value of 20 inches and a standard deviation of 0.5 inches. The length of the second pipe is normally distributed with a mean of 15 inches and a standard deviation of 0.4 inches. The amount of overlap is normally distributed with a mean of 1 inch and a standard deviation of 0.2 inches. Assuming the lengths and the amount of overlap are independent of each other, what is the probability that the total length after insertion is between 34.5 and 35 inches?
Blood type AB is found in only 3% of the population†. If 260 people are chosen at random, find the probability of the following. (Round your answers to four decimal places.)
What is a discrete random variable and how does it differ from a continuous random variable? Give examples.
Lead-time demand is 600 pounds. The standard deviation of lead time demand is 52 pounds. Supposing the lead time demand is normally distributed and that an acceptable risk of stocking out is 4%:
question for the following dataa. find the regression equation for predicting y from x.b. use
What is a chi-squared test used for? What is the typical null and alternate hypothesis when doing a chi-squared test?
Suppose we wish to test the null hypothesis that there are no differences among the proportion of men and women who developed a rash. Evaluate the P-value of the chi-square test of this hypothesis.
If 1 man aged 18-24 is arbitrarily chosen, determine the probability that his serum cholesterol level is between 165 and 200.
What is the purpose of a post-hoc test with analysis of variance? What is probabilistic equivalence? Why is it important?
there is a class of 50 people answering a question each student has a 60 chance of getting the correct answer. let x
Evaluate true mean delivery time to within 5 minutes at 90% reliability level? Suppose that standard deviation for delivery times is 18.2 minutes.
A study regarding the relationship between age and the amount of pressure sales personnel feel in relation to their jobs revealed the following sample information.
Possible test scores could range from 0 to 500. Assume that the scores are normally distributed. Find the probability that a student had a score higher than 320.
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