Question

In: Statistics and Probability

A research on speeding violations and drivers who use car phones indicated the following outcomes: Speeding...

A research on speeding violations and drivers who use car phones indicated the following outcomes:

Speeding Violation in the Last Year

No Speeding Violation

Total

Car Phone User

25

280

305

Not a Car Phone User

45

405

450

Total

70

685

755

a) Referring to the table, calculate the following probability: “person is a car phone user OR person had no violation in the last year”.

b) Referring to the table, calculate the following probability: “person is a car phone user GIVEN person had a violation in the last year”.

c) Referring to the table, calculate the following probability “person had no violation last year GIVEN person was not a car phone user”.

d) Referring the table, calculate the following probability “person had no violation in the last year AND was a car phone user)”.

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