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The compressive strength of samples of cement can be modeled by a normal distribution with a mean of 6000 kilograms per square centimeter and a standard deviation of 100 kilograms per square centimeter.
a) What is the probability that a sample's strength is less than 6250 Kg/cm2?
b) What is the probability that a sample's strength is between 5800 and 5900 Kg/cm2?
c) What strength is exceeded by 95% of the samples?
Formulate a linear programming model for this problem.
Two chi-square distributions were plotted on the same chart. One distribution was for 3 degrees of freedom and the other was for 12 degrees of freedom. Which distribution would tend to approach a normal distribution?
If a filled container of juice is selected at random, what is the probability that it was filled on machine I and is a conforming container?
A, B, C, D. If the order in which the truck visits the eight locations is chosen randomly, what is the probability that it will visit them in alphabetical order?
Write matlab Code for regression. one paragraph discussion of the project comprising method used and conclusions: regression results
If you must estimate the population mean within 10 days, how many outside salespeople should you sample? Use the 90 percent confidence level.
Using 5% level of significance, is there any difference in proportion of guests who would select the two resorts? What is your conclusion?
As an aid for improving students' study habit, nine students were randomly selected to attend a seminar on the importance of education in life. The table shows the number of hours each student studied per week before and after the seminar.
In testing a new drug, researchers found that 10% of all patients using it will have a mild side effect. A random sample of 12 patients using the drug is selected. Find the probability that: exactly three will have this mild side effect.
Write an expression for the probability that during a given 1-min period, all of the operators receive exactly the same number of requests.
Discuss possible study designs. Which of the designs would we use to test our research hypothesis?
What is the probability the selected employee is a production worker? What is the probability the selected employee is either a production worker or a supervisor?
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