You decide to take advantage of the current online dating craze and start your own web site. You know that you have 250 people who will sign up immediately and through a careful marketing research and analysis, you determine that membership can grow by 23 percent in the first two years, 18 percent in year 3, and 18 percent in year 4. How many members do you expect to have at the end of four years? (Round intermediate calculations to 6 decimal places, in all cases round your final answer to the nearest whole number.) Number of members in year 4

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