Cociolto
2 points
at a hardware store, the probability that a customer buys nails is 0.10. the
probability that a customer buys nails given that the customer buys a
hammer is 0.40.
which statement is true?
o
a. every customer who buys nails also buys a hammer.
o
b. buying a hammer and buying nails are independent events.
o
c. buying a hammer and buying nails are dependent events.
o
d. the probability that a customer buys a hammer and nails is 0.30.
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Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?