Which of the following is true of R 2? a. A low R2 indicates that the Ordinary Least Squares line fits the data well. b. R2 shows what percentage of the total variation in the dependent variable, Y, is explained by the explanatory variables. c. R2 is also called the standard error of regression. d. R2 usually decreases with an increase in the number of independent variables in a regression.

Recall that the owner of a local health food store recently started a new ad campaign to attract more business and wants to know if average daily sales have increased. historically average daily sales were approximately $2,700. the upper bound of the 95% range of likely sample means for this one-sided test is approximately $2,843.44. if the owner took a random sample of forty-five days and found that daily average sales were now $2,984, what can she conclude at the 95% confidence level?

Calculate the total payback for a $3,500 loan at 8% annual interest with monthly payments for two years. show all of your steps. use the formula, m = pm(1 + m)^na/(1 + m)^na - 1, as needed.

Marking brainliest for original answer.. are these two triangles similar? how can you tell?