## Introductory Statistics 9th Edition

a. P(red) = 0.5 , P(green) = 0.5 P(red at sixth time) = 0.5 When 5 red balls are removed from the box, P( red) = $\frac{5}{15}$ = 0.33 P(red at sixth time) = 0.33 c. He is wrong. The probability will remain the same. Coin tossing is mathematically equivalent to the procedure mentioned in part a.