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making auto parts - an automatic grinding machine in auto parts plant prepares axles wiht a target diameter fo 40.125 millimeters. The machine has some varability, so the standard deviation of the diamters is 0.002. A sample of 4 axles is inspected each hour for process control purposes, and records are kept of the sample mean diameter. What will be the mean and the standard deviation of the numbers record.
There is no proof the new policy is more effective, but we cannot finish the policy has no effect on smog. Interpretation of P-value for the given context.
Analysis of variance- One way classification - Are there differences among these 3 drugs with respect to how long they are retained in the body?
Consider that you are a line manager in your current Corporation. There is a 0.50 probability that you will be promoted this year. There is a 0.65 probability that you will get a promotion or a raise. The probability of getting a promotion and a r..
Assume the standard deviation of the distribution is 2.5 pounds. Find the probability that the mean of a sample of 55 families will be between 17 & 18 pounds.
A player of a video game is confronted with a series of opponents and has an 80% probability of defeating each one. Success with any opponent is independent of previous encounters. The player continues to confront opponents until defeated.
Due to financial hardship, the Nyke shoe company feels they only need to make one size of shoes, regardless of gender or height. They have collected data on gender, shoe size, and height
Test hypothesis that both propellants have same mean burning rate. Utilize α=0.05. Compute the P value.
A recent article in Business Week listed the "Best Small Companies." We are interested in the current results of the companies' sales and earnings.
A metropolitan school system consists of two districts- north and south. the north district contains 60% of all students, and the south district contains 40% of all students.
Compare equations with one variable to equations with two variables. How are they alike? How are they different? What if an equation had three variables?
The distribution of IQ scores is normal, what proportion of the population would score higher than Bob? Lower than Bob?
Using the .05 level, what should the researcher conclude? Solve this problem explicitly using all five steps of hypothesis testing.
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