Tree Diagrams (B) Worksheet | PDF Printable Statistics ... - Free Printable

Educational worksheet: Tree Diagrams (B) Worksheet | PDF Printable Statistics .... Download and print for classroom or home learning activities.

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- Problem 1:
- a. Probability of two red cubes: (12/18) * (11/17) = 22/51
- b. Probability of at least one green cube: 1 - P(two red) = 1 - 22/51 = 29/51

- Problem 2:
- a. Given first is a girl, probability second is also a girl: 9/29
- b. Probability a girl and boy are chosen: P(GB) + P(BG) = (10/30)*(20/29) + (20/30)*(10/29) = 40/87

- Problem 3:
- a. Given first nail is too small, probability second is also too small: 4/199
- b. Probability all three nails are too small: (5/200) * (4/199) * (3/198) = 1/130680
- c. Probability only the second nail is too small: (195/200) * (5/199) * (194/198) = 18915/788040

Parent Tip: Review the logic above to help your child master the concept of probability tree worksheet.

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