Question 271157
A census by the county dog control officer found that 18% of homes kept one dog as a pet, 4% had two dogs, and 1% had three or more. If a salesman visits two homes selected at random, what’s the probability that he encounters
 
a. no dogs? (0.77)^2
b. some dogs? (0.23)^2
c. dogs in each home? (0.23)^2 
d. more than one dog in each home? (0.05)^2
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Cheers,
Stan H.