Find the sample size necessary to estimate the mean iq score of statistics students such that it can be said with 99% confidence that the sample mean is plus or minus8 iq points of the true mean. assume that the standard deviation is 13 and determine the required sample size. nequals nothing (round up to the nearest integer.)

Find the equation of the line that goes through the points (4, –1) and (2, –5). use slope formula,equation,to find the slope of a line that passes through the points. m = use slope-intercept form, y = mx + b, to find the y-intercept (b) of the line. b = write the equation in slope-intercept form, y = mx + b.

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?