Three coins are tossed. Find the probability of tossing each of the following events: 1. Three heads. 2. Two heads and a tail. 3. At least one tail. 4. At least two heads.

A jar contains 77 white, 99 blue, and 1616 red marbles. If one marble is drawn at random from the jar, find the probability that: 1. the marble is white or blue. Answer: 2. the marble is white or red.Answer: 3. the marble is blue or red.Answer:

Calculate the Probability. Probability of rolling a sum of 2 or 4 when given two dice.

A bag contains 5 red balls, 8 white balls, and 7 orange balls. Find the probability of drawing a red or an orange. P(red or orange) O 12/40 O 8/20 O 12/40 O 12/20

You have a fair, well-shuffled deck of 52 cards. You draw one card, then draw another card.Find the probability that you get a Queen on the first draw and a Queen on the second draw(provide the answer as a fraction)a. With replacementb. without replacement

An urn contains 10 red marbles, 7 white marbles, and 8 blue marbles marbles. A child randomly selects three (without replacement) from the urn. Round to four decimal places. a. Find the probability all three marbles are the same color. b. Find the probability that none of the three marbles are white.

A bag contains 8 red chips and 12 blue chips. Two chips are selected randomly without replacement from the bag. What is the probability that the two chips are NOT the same​ color? A. 0.4947   B. 0.1474   C. 0.2526   D. 0.5053   E. 0.5474

The quality-control manager at a compact fluorescent light bulb (CFL) factory needs to determine whether the mean life of a large shipment of CFLS is equal to 7,476. hours. The population standard deviation is 900 hours. A random sample of 81 light bulbs indicates a sampie mean life of 7,226 hours. a. At the 0.05 lovel of significance, is there evidence that the mean life is different from 7,476 hours? Compute the p-value and interpret its meaning. c. Construct a 95% confidence interval estimate of the population mean life of the light bulbs. d. Compare the resuits of (a) and (c). What conclusions do you reach? a. Let u be the population mean. Determine the null hypothesis, Ho, and the alternative hypothesis, H,