Using the following information. Coefficients Intercept -12.8094 Independent variable 2.1794 ANOVA df SS MS F Regression 1 12,323.90 12,323.90 90.0481 Residual 8. 1,604.502 136.8553 Total 9 13,928.4 What is the coefficient of determination? Round the percentage to one decimal point.

A set of data had a sample mean of 42.0 and a sample standard deviation of 11.0. What is the coefficient of variation (CV), expressed as a percentage, for this set of data?  Round your answer to two decimal places. Do not include the percent sign.   Your Answer:

Can you please help me answer and understand this problem?Thank you!

When finding the area of a z score how do you know when to add or subtract the .5 or 1. I am very confused on this. I know more than half of the time you add .5 but then sometimes you also subtract from 1. In terms I am talking about Std. Normal Distribution if I am confusing you.

Available below are amounts of arsenic in samples of brown rice from three different regions. The amounts are in micrograms of arsenic and all samples have the same serving size. Use a 0.05significance level to test the claim that the three samples are from populations with the same mean. Do the amounts of arsenic appear to be different in the different​ regions? Given that the amounts of arsenic in the samples from region Ahave the highest​ mean, can we conclude that brown rice from region A poses the greatest health​ problem?     Arsenic Amounts (micrograms)                             A 5.8 5.8 6.5 6.5 6.9 7.2 7.3 7.3 7.6 7.6 7.9 7.9   B 4.5 4.9 5.2 5.2 5.5 5.8 5.8 5.9 6.3 6.3 6.4 6.4   C 1.8 3.7 4.1 4.1 4.6 4.6 4.8 5.1 5.2 5.6 5.7 5.7     The Test statistic is:   The P-value is:   The conclusion is: