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1. Gas in a 1500 in^3 cylinder at 2000 lb/in^2 gauge is reduced in volume to 1000 in^3 while heated from 75degF to 250 degF. What is the initial pressurein the cylinder, in psia?
2. What is the final volume occupied by the gas, in Ft^3?
3.What is the final pressure in the cylinder, in psig?
the real estate assessor for a county government wants to study various characteristics of single family houses in the
a life insurance salesperson claims the average worker in hobart has no more than 25 000 of personal life insurance. to
Develop a regression model that would predict the DJIA based on the S&P 500 index. Based on this model, what would you expect the DJIA to be when the S&P is 1,100? What is the correlation coefficient (r) between the twomarkets?
suppose the present value of a risky investment is approximately normally distributed with mean 10000 and standard
What is the idea of "least squares"? What is the connection between "least squares" and linear regression?
The average age in the sample was 22.5 years with a standard deviation of 5 years. Construct a 95% confidence level. What is the probability that the sample mean will be more than $306.60?
How might one know if an error was made in accepting or rejecting the null hypothesis? Do you suppose the nature of the research has an influence on the selection of the significance level? Why or why not?
15% of the south district students failed, and 5% of the central district students failed. Develop a probability tree showing all marginal, conditional, and joint probabilities.
Construct a 95% confidence interval estimate of their mean weight.
question 1 a two-way anova model was used to analyze an experiment with two levels of one factor three levels of a
Does Lavastatin reduce the risk of heart attack? In a Texas Study, researchers gave Lovastatin to 2,325 people, and a inactive substitute to 2,081 people, with an average age of 58. After 5 years, 57 of the lovastatin group suffered a heart attack..
A television station estimates that 45% of college students watch the Super Bowl. For a sample of 240 students selected at random, what is the mean and variance of the number of students who watch this game?
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