Samples of size n = 20 are randomly selected from 4 different bins of dvds ranging in price from $4.99 to $9.99. you return each dvd before randomly drawing another and calculate the variance of each sample. what is the distribution of the sample variance?
a. normal distribution skewed to the right
b. normal distribution
c. not a normal distribution
d. normal distribution skewed to the left

Which point on the x-axis lies on the line that passes through point c and is parallel to lino ab?

Martha has a deck of cards. she has lost some of the cards, and now the deck only contains nine spades, eleven diamonds, eight clubs, and twelve hearts. martha predicts that whenever she draws a card from the deck without looking, she will draw a club one-fifth of the time. which activity would best allow martha to test her prediction? a. randomly draw a card from the box and see if it is a club. b. randomly draw a card. then, continue to draw another card until all eight clubs are drawn. c. randomly draw and replace a card 120 times. then, observe how close to 30 times a club is drawn. d. randomly draw and replace a card 100 times. then, observe how close to 20 times a club is drawn.

Which zero pair could be added to the function f(x) = x2 + 12x + 6 so that the function can be written in vertex form? o 3, -3o 6,629,-936, 36