Ten years ago of American families owned stocks or stock funds. Sample data collected by the Investment Company Institute indicates that the percentage is now (The Wall Street Journal, October 5, 2012). a. Develop appropriate hypotheses such that rejection of will support the conclusion that a smaller proportion of American families own stocks or stock funds in 2012 than ten years ago. : : b. Assume the Investment Company Institute sampled American families to estimate that the percent owning stocks or stock funds was in . What is the -value for your hypothesis test (to 4 decimals)

Iam at home. /: i am playing video games. translate the following statement into symbolic form.

An equation in slope-intersept form the lines that passes thought (-8,1) and is perpindicular to the y=2x-17.

Suppose we have a set of small wooden blocks showing the 26 letters of the english alphabet, one letter per block. (think of scrabble tiles.) our set includes 10 copies of each letter. we place them into a bag and draw out one block at a time. (a) if we line up the letters on a rack as we draw them, how different ways coukl we fill a rack of 5 letters? (b) now suppose we just toss our chosen blocks into a pile, and whenever we draw a letter we already have, we put it back in the bag and draw again. how many different piles of 5 blocks could result? possible? piles will contain at least one repeated letter? (c) if we draw out 5 blocks wit hout looking at them, how many different piles are (d) if we draw out 5 blocks without looking at them, how many of the possible 2. (4) consider the following formula. 12 give two different proofs, one using the factorial formulas and the other combina torial.