Explore our large collection of Probability solutions available
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[Solution] In a recent survey 8 people watched ABC, 7 people watched NBC, and 12 people watched CBS. If a perso #18407
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[Solution] The probability that a person will get a cold this year is 0.7. If 4 people are selected at #18408
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Solution: Suppose you hold 30 tickets in a drawing for a color television. There were 500 tickets sold #18409
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[Solution] One card is drawn from an ordinary deck of playing cards. What is the probability of getting #18410
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[Solved] When two dice are rolled, find the probability of getting a) a sum of 4 or 11 b) a sum great #18411
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[Solved] (apts.) In a College Algebra class there are 18 freshmen and 17 sophomores. Eight of the freshmen ar #18413
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[Solution] Three cards are drawn from a deck without replacement. What is the probability of selecting #18414
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[Solution] The probability that a person has a VCR, given that he or she has a color T.V. is 0.45. The probabil #18416
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(See Solution) If a gambler rolls two dice and gets a sum of 9, he wins $10, and if he gets a sum of four #18418
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[Solved] If 23% of all commuters ride to work in car pools, find the probability that if eight worker #18419
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[Solved] (apts.) If 60% of all women are employed outside the home, find the probability that in a sample of #18420
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[Solved] 10% of the cameras sold in America are made in Europe, 70% are made in the U.S., and 20% are made in #18422
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[Solution] If 4% of the population catch a certain disease, find the probability that in a group of 200 #18423
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[Solution] Dottie’s Tax Service specializes in federal tax returns for professional clients. A recent audit by #18435
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(Solved) A new testing method for statistics students is being studied. Two classes are selected for the stud #18454
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[Solved] An apartment building has the following distribution of apartments: If an apartment is selected at r #18465
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(Solved) After completing an inventory of three warehouses, a golf club shaft manufacturer described its stoc #18466
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[Solution] A study has shown that 80% of teenagers have a least one MP3 player by the age of 16. If a sample of #18468
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[Solved] A circle of radius has area . If a random circle has a radius that is uniformly distributed on the i #18486
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[Solved] Suppose that Y1, Y2, ……, Yn denote a random sample from an exponentially distributed population with #18488
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[Solved] Assume the likelihood that any flight on Northwest Airlines arrives within 15 minutes of the schedul #18492
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[Solution] An internal study by the Technology Services department at Lahey Electronics revealed company employ #18493
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[Solution] Dr. B. A. Yes has been teaching basic statistics for many years. He knows that 80 percent of the stu #18535
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(Solved) 55% of a retailer’s sales are in store and 45% on line. Of the in store sales, 61% are cash and 39% #18556
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[Solution] A student decides to randomly guess the answers to a ten question multiple choice exam. Suppose each #18558
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Solution: A metal fabricator produces 100 foot aluminum strips that average 7 small defects. Given this, find #18559
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(Solved) A meat processing plant produces a meat patty whose advertised weight is 16 ounces. Experience shows #18560
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Solution: A plant takes an average of three minutes to produce a certain part. Given this, find the following #18562
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[Solution] Suppose a fair, standard six-sided die is rolled once. Find the following probabilities. a) That the #18589
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[Solved] Consider the following joint frequency table which summarizes voting trends in the most recent Presi #18590
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[Solution] A retailer sells books and music in a brick and mortar store and through a web site. 53% of the sale #18591
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[Solved] A student randomly guessed the answers to a 5 question true false exam. What probability distributio #18593
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[Solution] A small shop averages 7 visitors per 30 minute period. What probability distribution should be used #18594
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[Solved] The daily high temperature of a small city in October is uniformly distributed and ranges from 65 to #18595
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[Solved] A manufacturing company has 10 machines in continuous operation during a workday. The probability th #18605
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Solution: A metropolitan school system consists of three districts -north, south, and central. The north Distr #18606
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(See Solution) A box contains 30 chocolates. Ten of the chocolates are solid, ten have caramel filling, five have c #18729
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[Solution] I flip a coin five times. a. What is the probability that the first coin flip will come up tails? b. #18730
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(Solved) A Real estate agent has four houses to sell before the end of the month by contacting prospective cu #19020
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[Solved] Laptop computers produced by a company have an average life of 38.36 months. Assume that the life of #19021
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(Solved) Out of 140 million cellular telephone subscribers in the United States, 36 million use Verizon. A. T #19022
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[Solution] According to an article in USA Today, 60% of 7-to 12- year olds who use the Internet do their school #19023
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[Solved] It has been suggested that an investment portfolio selected randomly by throwing darts at the stock #19062
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[Solution] What is the range of the values of the probability of an event? #19191
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[Solved] If an event cannot happen, what value is assigned to its probability? #19192
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(Solved) If the probability that it will rain tomorrow is 0.20, what is the probability that it won't rain to #19193
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(See Solution) Classify each statement as an example of classical probability, empirical probability, or subjective #19194
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[Solution] If two dice are rolled one time, find the probability of getting these results. a. A sum of 6 b. Dou #19195
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[Solved] In a college class of 250 graduating seniors, 50 have jobs waiting, 10 are going to medical school #19197
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[Solved] A couple has three children. Find each probability. a. All boys b. All girls or all boys c. Exactly #19199
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[Solution] Roll two dice and multiply the numbers together. a. Write out the sample space. b. What is the proba #19203
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[Solved] A box contains a $1 bill, a $5 bill, a $10 bill, and a $20 bill. A bill is selected at random, and i #19204
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(Solved) Define mutually exclusive events, and give an example of two events that are mutually exclusive and #19205
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[Solution] At a particular school with 200 male students, 58 play football, 40 play basketball and 8 play both #19209
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(See Solution) In a statistics class there are 18 juniors and 10 seniors; 6 of the seniors are females, and 12 of t #19210
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(Solved) The Bargain Auto Mall has these cars in stock. SUV Compact Mid-sized Foreign 20 50 20 Domestic 65 10 #19211
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[Solution] Three cable channels (6, 8, and 10) have quiz shows, comedies and dramas. The number of each is show #19212
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[Solved] If one card is drawn from an ordinary deck of cards, find the probability of getting the following a #19215
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[Solution] At a local university 54.3% of incoming first-year students have computers. If 3 students are select #19219
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[Solution] Of fans who own sports league-licensed apparel, 31% have NFL apparel. If 3 of these fans are selecte #19220
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Solution: Eighty-eight percent of US children are covered by some type of health insurance. If 4 children are #19221
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[Solved] In a department store there are 120 customers, 90 of whom will buy at least one item. If 5 customers #19222
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(Solved) In a scientific study there are 8 guinea pigs, 5 of which are pregnant. If 3 are selected at random #19223
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[Solved] In a civic organization, there are 38 members; 15 are men and 23 are women. If 3 members are selecte #19224
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(See Solution) A manufacturer makes two models of an item: model I. which accounts for 80% of unit sales, and model #19225
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Solution: An insurance company classifies drivers as low-risk, medium-risk, and high-risk. Of those insured, 6 #19226
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[Solution] Consider this table concerning utility patents granted for a specific year. Select one patent at r #19229
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(Solved) According to the Statistical Abstract of the United States, 70.3% of females ages 20 to 24 have neve #19230
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[Solution] Seventy-six percent of toddlers get their recommended immunizations. Suppose that 6 toddlers are sel #19231
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(See Solution) Fifty-eight percent of American children (ages 3 to 5) are read every day by someone at home. Suppos #19232
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(Solved) How many 5-digit zip codes are possible if digits can be repeated? If there cannot be repetitions? #19233
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Solution: How many different ways can 7 different video game cartridges be arranged on a shelf? #19234
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[Solved] A store manager wishes to display 8 different brands of shampoo in a row. How many ways can this be #19235
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[Solved] How many different 3-digit identification tags can be made if the digits can be used more than once? #19236
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[Solution] How many different 4-color code stripes can be made on a sports car if each code consists of the col #19238
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Solution: How many different ID cards can be made if there are 6 digits on a card and no digit can be used mor #19239
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(Solved) How many different signals can be made by using at least 3 distinct flags if there are 5 different f #19240
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[Solved] How many ways are there to select 3 bracelets from a box of 10 bracelets, disregarding the order of #19241
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[Solution] How many ways can a committee of 4 people be selected from a group of 10 people? #19242
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(See Solution) How many different ways can a theatrical group select 2 musicals and 3 dramas from 11 musicals and 8 #19243
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[Solution] How many ways can a dinner patron select 3 appetizers and 2 vegetables if there are 6 appetizers and #19244
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[Solution] How many different ways can an instructor select 2 textbooks from a possible 17? #19245
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[Solution] How many ways can a person select 7 television commercials from 11 television commercials? #19246
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[Solution] Find the probability of getting 2 face cards (king, queen, or jack) when 2 cards are drawn from a de #19247
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[Solved] In a company there are 7 executives: 4 women and 3 men. Three are selected to attend a management se #19248
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[Solved] The signers of the Declaration of Independence came from the Thirteen Colonies as shown. Massachuset #19249
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Solution: If 50 tickets are sold and 2 prizes are to be awarded, find the probability that one person will win #19250
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(See Solution) A drawer contains 11 identical red socks and 8 identical black socks. Suppose that you choose 2 sock #19251
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[Solution] Determine whether the distribution represents a probability distribution. If it does not, state why. #19254
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[Solved] A die is loaded in such a way that the probabilities of getting 1, 2, 3, 4, 5 and 6 are1/2, 1/6, 1/1 #19261
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(See Solution) A box contains two $1 bills, three $5 bills, one $10 bill, and three $20 bills. Construct a probabil #19263
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[Solved] A lottery offers one $1000 prize, one $500 prize, and five $100 prizes. One thousand tickets are sol #19268
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Solution: Compute the probability of X successes, using the binomial formula. a. n = 6, X = 3, p = 0.03 b. n = #19270
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[Solution] A student takes a 20-question, true/false exam and guesses on each question. Find the probability of #19271
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Solution: In a survey, 30% of the people interviewed said that they bought most of their books during the last #19272
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[Solved] A survey found that 25% of pet owners had their pets bathed professionally rather than do it themsel #19277
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[Solution] In the past year, 13% of businesses have eliminated jobs. If five businesses are selected at random #19278
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[Solution] Use the multinomial formula and find the probabilities for each. #19280
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[Solved] A die is rolled 4 times. Find the probability of two 1s, one 2, and one 3. #19282
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[Solved] Find each probability P(X; λ ), using Table C in Appendix C. (a) P(5; 4) (b) P(2; 4) c) P(6 #19283
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Solution: A recent study of robberies for a certain geographic region showed an average of one robbery per 20 #19284
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Solution: A telephone soliciting company obtains an average of five orders per 1000 solicitations. If the comp #19285
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