1. (5 points) In an ABC poll, a random sample ofn= 1006 adult Americans was asked, "Compared to buying things in a store, do you think that buying things over the Internet poses more of a threat to your personal privacy, less of a threat, or about the same?" The percentages that selected each response were

More of a threat 40%

Less of a threat 7%

About the same 47%

No opinion 6%

(a) (2 points) What is the margin of error for this poll?

(b) (3 points) Can you conclude that fewer than half of all adult Americans perceived Internet shopping as posing more of a threat than buying things in a store? Ex plain.