Which statements are true about the solution 2 9 The graph has a closed circle. The graph has an open circle. The arrow points left. The arrow points right.

Is the square root of 4 plus the square root of 16 rational?

Arandom sample of 15 observations is used to estimate the population mean. the sample mean and the standard deviation are calculated as 172 and 63, respectively. assume that the population is normally distributed. a. with 99 confidence, what is the margin of error for the estimation of the population mean? b. construct the 99% confidence interval for the population mean. c. construct the 95% confidence interval for the population mean. d. construct the 83% confidence interval for the population mean. hint: you need to use excel function =t.inv.2t to find the value of t for the interval calculation.

Abc is dilated by a scale factor of 3 with the origin as the center of dilation, resulting in the image a'b'c'. if the slope of line ab is -1.2, what is the slope of line a'b'? a. -1.2b. 3.6c. 1.2d 1.8