Electronic communications. A Mintel study asked consumers if electronic communications devices inf luenced whether or not they bought a certain car. The table below gives the results classified by household income:

If we select a person at random from this sample:

a) What is the probability that electronic communication devices somewhat inf luenced their decisions?

b) What is the probability that the person is earning at least $100K?

c) What is the probability that the person was somewhat inf luenced by electronic communications and earns at least

$100K?

d) What is the probability that electronic communications somewhat inf luenced the purchase or that the person earns at least $100K?

Communications influence on car purchase, by household income, July 2011 Income Communication (e.g., hands-free calling):
*$50K $50K–99.9K $100K
Total Very Much 30 57 41 128 Somewhat 26 39 62 127 Not At All 23 39 35 97 Total 79 135 138 352