Mathematics Homework Help. Pasadena City College Statistic Questions
1) Berdine’s Chicken Factory has several stores in the Hilton Head, South Carolina, area. When interviewing applicants for server positions, the owner would like to include information on the amount of tip a server can expect to earn per check (or bill). A study of 500 recent checks indicated the server earned the following amounts in tips per 8-hour shift.
Amount of Tip ($)
Number
0 up to 20
200
20 up to 50
100
50 up to 100
75
100 up to 200
75
200 or more
50
a) What is the probability of a tip of $200 or more?
b) Are the categories “$0 up to $20,” “$20 up to $50,” and so on considered mutually exclusive?
c) If the probabilities associated with each outcome were totaled, what would that total be?
d) What is the probability of a tip of up to $50?
e) What is the probability of a tip of less than $200?
2) There are 100 employees at Kiddie Carts International. Fifty-seven of the employees are production workers, 40 are supervisors, 2 are secretaries, and the remaining employee is the president. Suppose an employee is selected:
a) What is the probability the selected employee is a production worker?
b) What is the probability the selected employee is either a production worker or a supervisor?
c) Refer to part (b). Are these events mutually exclusive?
3) There are 20 families living in the Willbrook Farms Development. Of these families, 10 prepared their own federal income taxes for last year, 7 had their taxes prepared by a local professional, and the remaining 3 by H&R Block.
a) What is the probability of selecting a family that prepared their own taxes?
b) What is the probability of selecting two families, both of which prepared their own taxes?
