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The manager of a manufacturing company believes that experience is the most valuable variable in determining a worker's productivity. She collects data on productivity of 10 workers with known number of years of experience. The data collected are given bellow.
a) Fit a linear regression model to these data
b) Determine the coefficient of determination R^2
c) Determine the estimate of the error variance
d) Find a 95% confidence interval for the regression parameter B1 and use this confidence interval to test the hypothesis H0: B1=0 versus H1: B ? 0. What is the level of significance for the test?
What is the role of the F test in multiple regression? (b) How is the F statistic calculated from the ANOVA table? (c) Why are tables rarely needed for the F test?
At the level of significance, is there evidence that the population mean force is greater than 1500 pounds?
Define, describe and provide an example of the Komologrov-Smirnov distribution. Use MS-Excel (if possible) to solve this problem, also Show all your work in obtaining the answer.
Construct a 95% confidence interval for the population mean, assuming a normal distribution?
I need to find the maximum and minimum surface areas for 2 cubes with a total volume of 432 in^3. No other perameters are specified. I've been able to use common sense to find the max is 432 sq/inches
What is the percentage of variation in the dependent variable explained by the variation in the independent variable.
a deck of ordinary cards is shu?ed and 13 cards are dealt. what is the probability that the last card dealt is an
there are 8 cds in a rack 5 are jazz and 3 are classic rock. two cds are selected at random one after the other with
Each party's position must be statistically sound. Include as suitable graphs, computations, and statistical tests.
I performed a linear regression for the Population to the monthly profit, but do not understand how to use the information. And I do not understand the confidence interval estimate; how do I use and decipher the info.
The table shows the results of a survey im which 180 family were asked if they own a home and if they will be purchasing a new vehicle this year.
Which of the following assumptions for inference about a proportion using a confidence interval are violated,
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