Use the "at least once" rule to find the probability of the following event. Purchasing at...
1)The probability that an event occurs in each of 18 independent trials is 0.2. Find the probability that this event will occur at least three times? 2)The probability of winning with one purchased lottery ticket is 0.02. Evaluate the probabilities of winning a prize with n tickets for n = 1,10,20,30,40,50,60,70,80,90,100 if the tickets belong to different series for each case.
Question Completion Status: QUESTION 1 Use the at least once rule to find the indicated probability. Round your answer to 3 decimal places when necessary Find the probability of getting at least one tails when tossing 5 fair coins. O A 0.969 OB. 0.945 OC 0.95 OD. 0.998 QUESTION 2 Find the indicated probability. Round your answer to 6 decimal places when necessary. Two "fair" coin are tossed. Let A be the event of number of tails equal 1 and...
Use the "at least once rule to find the probability of getting at least one 4 in six rolls of a single fair die. The probability is _______
The probability that concert tickets are available by telephone is 0.91. For the same event, the probability that tickets are available through a Web site is 0.95. Assume that these two ways to buy tickets are independent. What is the probability that someone who tries to buy tickets both through the Internet and by the telephone will obtain at least one ticket? Round your answer to four decimal places (e.g. 98.7654)
A According to an article, 40% of aduls have experienced a breakup at least once during the last 10 yoars. Of9 andomly selected adults, find the probability that the numbe, X, who have experienced a breakup at least onoe during the last 10 yoars is a. exactly five, at most five, at loast five. b. at least one; at most one c. between five and seven, inclusive. d. Determine the probability distribution of the random variable X a. The probabilty...
A radio station runs a promotion at an auto show with a money box with 15 $25 tickets, 11 $5 tickets, and 12 31 tickets. The box contains an additional 20 "dummy" tickets with no value. Three tickets are randomly drawn. Find the probability that all three tickets have no value. 3. The probability that all three tickets drawn have no money value is Round to four decimal places as needed.) 4. If you are dealt 3 cards from a...
(a) If your life plan is to buy one lottery ticket every day for 5 days a week, 50 weeks a year for the next 50 years, where on any lottery ticket you have a one in 500,000,000 chance of winning the jackpot, what is the probability you will win the jackpot at least once in your lifetime? Hint: Let Wi be the event you win the jackpot with the ith lottery ticket. Assume these are independent. (b) (continued) Buying...
Use the at least once rule to find the probabilities of the following events? 1.) Getting at least one tail when tossing five fair coins? 2.) Getting at least one 50 year flood in the next ten years?
A lottery has a grand prize of $100,000, four runner-up prizes of $20,000 each, nine third-place prizes of $2000 each, and twenty-one consolation prizes of $200 each. If 300,000 tickets are sold for $1 each and the probability of any one ticket winning is the same as that of any other ticket winning, find the expected net winnings on a $1 $ 157 ticket. (Round your answer to two decimal places.)
A lottery has a grand prize of $120,000, two runner-up prizes of $15,000 each, four third-place prizes of $6000 each, and eight consolation prizes of $1200 each. If 480,000 tickets are sold for $1 each and the probability of any one ticket winning is the same as that of any other ticket winning, find the expected net winnings on a $1 ticket. (Round your answer to two decimal places.)