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Question: Cooling method for gas turbines. The Journal of Engineering for Gas Turbines and Power (January 2005) published a study of a high-pressure inlet fogging method for a gas turbine engine. The heat rate (kilojoules per kilowatt per hour) was measured for each in a sample of 67 gas turbines augmented with high-pressure inlet fogging. In addition, several other variables were measured, including cycle speed (revolutions per minute), inlet temperature (?C), exhaust gas temperature (?C), cycle pressure ratio, and air mass flow rate (kilograms per second). The data are saved in the GASTURBINE file. (The first and last five observations are listed in the table.) Consider using these variables as predictors of heat rate (y) in a regression model. Construct scatterplots relating heat rate to each of the independent variables. Based on the graphs, hypothesize a polynomial model relating y to each independent variable.
1. suppose you are calculating an analysis of variance for a completely randomized design. you are testing the
Why can hiring people through the attraction-selection-attrition (ASA) framework be disadvantageous?
An independent sample t-test for gender (IV) and pretest scores (DV) Were there significant gender differences? How do you know? Interpret the results statistically and in words.
Consider the data set sunspots from Andrews and Herzberg (1985) as a response variable. For the predictor data x, use
Tablet hardness. Exercise 27.11 concerns process control data on the hardness of tablets (measured in kilograms) for a pharmaceutical product. Table 27.4 gives data for 20 new samples of size 4, with the and s for each sample. The process has bee..
a normally distributed random variable y has std dev. 800. a random sample of 100 observations was taken from y and
Provide a 99% confidence interval for the population proportion of college students who worked to pay for tuition and living expenses.
for problems 1-5 standardize the value according to the given average and sd. 1. x 10 average 5 and sd 2. 2. x 73
Use the provided evaluation form, found on page 59 of your textbook, to formally evaluate and rank each proposal. Post your rankings with justification of your decision on your Group Discussion Board. Be sure to include the completed Project Prio..
1. What was the relationship among intellectual, political, economic, and social changes in the eighteenth century? What similarities and differences do you see between the French Revolution and contemporary revolutions? (at least 300 words to ans..
The PricewaterhouseCoopers Human Capital Index Report indicated that the average cost for an American company to fill a job vacancy during the study period.
Misery loves company. It is time for the PE (professional engineer's exam). The results of the national test were normally distributed around the mean score of 70.
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