Replace each ? with the symbol = or ≠ to make the statement true. a. 54 ? 53 b. 8 ? 4 + 4 c. 23 + 6 ? 6 + 23 d. 64 ? 99

Find the roots of the equation below. x^2 - 6 + 9 = 0

Which is the focus of a parabola with equation y2=4x

People end up tossing 12% of what they buy at the grocery store. assume this is the true population proportion and that you plan to take a sample survey of 540 grocery shoppers to further investigate their behavior. a. calculate the mean and the standard error for the sample proportion p. b. describe the sampling distribution of p in part a. draw a graph of this probability distribution with its mean and standard deviation. what is the probability that your survey will provide a sample proportion more than 15%? c. d. population proportion? what is the probability that your survey will provide a sample proportion within + 0.03 of the