1 A researcher conducted an Internet survey of 300 students at a particular college to estimate the average amount of money students spend on groceries per week. The data are distributed normally, with the highest weekly amount being $250 and the lowest weekly amount being $100. The sample mean is $175. What is the margin of error (ME), rounded to the nearest hundredth, for this college?

ME = $2.89

ME = $866.03

ME = $17.32

ME = $2.69

2 Using the table for many repetitions of the experiment of tossing a coin 10 times, what is the mean number of heads in 50 repetitions of this experiment and 1,000 repetitions, and which of these sample means is closer to the population mean?