An investment website can tell what devices are used to access the site. The site managers wonder whether they should enhance the facilities for trading via "smart phones," so they want to estimate the proportion of users who access the site that way (even if they also use their computers sometimes). They draw a random sample of 300 investors from their customers. Suppose that the true proportion of smart phone users is 35%.

c) If the sample size were increased to 600, would your answers change? Explain.

a. No, the shape and symmetry characteristics would still be approximately the same and the mean would still be the same.

b. No, the shape, symmetry characteristics, and mean will only change if the sample size is increased by at least 1000.

c. Yes, although the mean would still be the same, the shape and symmetry characteristics would change.

d. Yes, although the shape and symmetry characteristics would remain, the mean would increase.