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The owner of a single-family home would like to develop a model to predict electricity consumption in his house, based on average atmospheric temperature in degrees Fahrenheit.
Monthly kilowatt usage and temperature data are available for a period of 24 months
1.) Assume a linear relationship, use the least square method to find the regression coefficients bo and b1
2.) Predict the mean kilowatt usage when the average temperature is 50 degrees Fahrenheit.
3.) Compute the Durbin-Watson statistic. At the 0.05significance level, is there evidence of autocorrelation among the residuals?
In a survey of 900 college students , 405 out of 900 students has credit card or 45% of the student owned a credit card.
Regression analysis techniques
Use the Excel Analysis ToolPak to find the linear correlation coefficient for the systolic and diastolic measurements.
A local ice-cream store receives an average of 3 customers per hour. Assume that the arrival events are well described by Poisson distribution. The cashier wants to leave the store to run an errand. The manager computes the expected time T between..
1. listed below are the numbers of people executed in the united states from 1976 nbsp to 1994. in 1976 the u.s.
And the rest of the people were from River City. Out of the sample, 19 people had some form of cancer. Thirteen of these people were from Laketown
1. Do this exercise by hand. A famous brand-name manufacturer wants to know whether people prefer Nibbles or Wribbles. They sample each type of cracker and indicate their like or dislike on a scale from 1 to 10. Which do they like the most?
What is the average rating for all CBC movies? How about ABN movies and BBS movies and create a line graph of the monthly average ratings for CBC for the year
Examine statistical data consisting of records of car accidents on Victorian roads and freeways in 2012
Each condominium is classified as Gulf View if it is located directly on the Gulf of Mexico or No Gulf View if it is located on the bay or a golf course, near but not on the Gulf.
Calculate the sample size needed given these factors
Using the information from part by hand, calculate a 90 confidence interval for the difference of the means for the two time periods.
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