Bobby billy

Which of the following would be considered a biased estimator A) median B) mean C) proportion D) variance

For the data on the table below find the sum of the absolute deviations for the predicted values given by the regression line y=0.5x+15.5. X y 1 15 6 18 9 20 16 23 23 27 33 32 A) -2 B) -1.5 C) 1.5 D)2

Suppose you will perform a test to determine whether there is sufficient evidence to support a claim of a linear correlation between two variables. Find yhe critical values of r given the number of pairs of data n and the significance level a. N=40, a=0.0...

In a recent news article about an experimental vaccine for children, the following statement was presented: "In a trial involving 1602 children, only 14 (1%) of the 1070 who received the vaccine developed thr flu, compared with 95(18%) of the 532 who got...

The regression equation relating attitude rating (x) and job performance rating (y) for the employees of a company is y=11.7+1.02x. Ten pairs of data were used to obtain the equation. The same data yield r=0.863 and y=80.1. What js the best predicted job...

The regression equation relating dexterity scores(x) and productivity scores(y) for the employees of a company is y=5.50+1.91x. Ten pairs of data were used to obtain the equation. The same data yield r=0.986 and y=56.3. What js the best predicted producti...

Given the linear correlation coefficient r and the sample size n, determine the critical values of r and use your finding to state whether or not the given represents a significant linear correlation. Use a significance level of 0.05. R=0.523,n=25 A) Crit...

Suppose you will perform a test to determine whether there is sufficient evidence to support a claim of a linear correlation between two variables. Find the critical values of r given the number of pairs of data n and the significance level a. N=17, a=0.0...

The table shows the results from a study in whixh some patients were treated with a new medical drug for sleeping disorders and others received a common sleeping pill. Use a 0 05 significance level to find the critical value needed to test for independenc...

A randomized controlled trial was designed to compare the effectiveness of splitting versus surgery in the treatment of carpal tunnel syndrome. Results are given in the table. The results are based on evaluations made one year after the treatment. Using 0...

The table shows the results from home games for a specific team during the season leading up to the world series. The teams hone field had a roof that can be closed for weather. If it is closed, the fans could make more noise for the hime team and possibl...