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Crude oil of specific gravity 0.86 is to be pumped at 20C. what is the min pipe size that can be used in order to operate in the turbulent regime at a velocity of 1.5 m/s. density = 860 kg/m^3.
You take a random sample around town and calculate a p-value for your hypothesis test of 0.0913. What is the appropriate conclusion? Conclude at the 5% level of significance.
The mean score of a college entrance test is 500, the standard deviation is 75 and the scores are normally distributed.
Approximately 30% of obese patients develop diabetes. If a physician sees 10 patients who are obese, a) What is the probability that half of them will develop diabetes?
If you test the null hypothesis at the 0.01 level of significance, is there evidence that the new process has reduced turnaround time? Interpret the meaning of the p-value in this problem.
An analyst wishes to include number of older siblings in family as a predictor variable in a regression analysis of factors affecting maturation in eighth graders. The number of older siblings in the sample observations ranges from 0 to 4.
1. the american auto association reports the mean price per gallon of regular gasoline is 3.45 with a population
Expectation and variance of a random variable and let X be a random variable with the following probability distribution:
solve the following problem by showing your work.the following shows the impact of three different types of head start
Test of product quality using human inspectors can lead to serious inspection error problems. To evaluate the performance of inspectors in a new company, a quality manager had a sample of 12 novice inspectors evaluate 200 finished products.
a) Find the 95% confidence interval for the population mean based on the 37 patients who remain after you drop the outlier. b) Compare your interval in (a) with your interval from Exercise 18.32. What is the most important effect of removing the ou..
Find the probability, rounded t four decimal places, that a person selected at random consumes less than 220 pound per year.
What is the probability that 6 or more claims are made by males under 25? (C) What is the expected number of claims made by males under 25? What is the standard deviation of the distribution?
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