The probability that Jane hits the target on any given attempt is 0.74. The probability that Edna hits the target on any given attempt is 0.62. If the two students behave independently, find the probability that if both women shoot at the target at least one of them hits the target? Give your answer to 3 places of decimal.
Urn One has 3 red balls and 4 blue balls. Urn Two has 6 red balls and 7 blue balls. An urn is selected at random and then a ball is selected from the selected urn at random. What is the probability that the ball selected is red? State your answer to three places of decimal.
Mr. Smith's gardener is not dependable; the probability that he will not water the rosebush during Smith's absence is 0.22. The rosebush is in questionable condition anyhow; if watered, the probability of its dying is 0.19 but if it is not watered, the probability its dying is 0.86. Upon returning, Smith finds that the rosebush has died. What is the probability that the gardener did not water the rosebush? State your answer rounded to three places of decimal.