The Internet has become a crucial marketing channel for business. According to a recent study, 91% of retail brands use two or more social media channels for business. If a sample of 10 businesses is selected, what is the probability that:

a. 8 use two or more social media channels for business?

b. At least 8 use two or more social media channels for business?

c. At most 6 use t wo or more social media channels for business?

d. If you selected 10 businesses in a certain geographic a l area and only three u se two or more social media channels for business, what conclusion might you reach about businesses in this geographical area?