Homework 2 Answers

BSTA 550

Non-textbook problems

• #1: (a) 1 does not hold because \(0 \neq \dfrac{1}{216}\)      (b) 2 does not hold because \(P(B \cap C) \neq P(B)P(C)\)

• NTB # 2: 0.3916

Textbook problems

There are answers at the back of the book!! Selected answers (or hints) not provided at the end the book:

• Chapter 22

  • # 30: (a) 2,835     (b) 405     (c) 10,780     (d) 7,980

  • # 40: 0.6666667

  • # 42: 0.002116402 (This is the answer when \(n=5\). Your answer needs to be in terms of \(n\).)

  • # 44: 0.3

  • # 46: 0.3333333

  • # 48: 0.007936508 (This is the answer when \(n=5\). Your answer needs to be in terms of \(n\).)

• Chapter 3

  • # 4: (a) 0.111328    (b) 0.004872    0.995128

  • # 10: (c) 0.384 If you have the right answer to (c), then you should be able to figure out the rest (see (e)).

  • # 12: No.

  • NTB #1: (a) 0.0799     (b) 0.07553     (c) 0.0655

• Chapter 4

  • #4: 0.25

  • # 12: (a) 0.4285714     (b) 0.4285714     (c) 0.1428571

• Chapter 5

  • #17 a. 0.71; b. 0.29; c. 48/71; d. 1; e. 25/29; f. 25/39