JustAnswer
|Question 1 |5 points |Save |
| |The following table relates the grades in an advanced mathematics course to the student's year in college: | | | | |
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| |Let E be the event that the student received a grade of B. Let F be the event that the student is a | | | | |
| |sophomore. Find P(F|E). | | | | |
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|[pic] Question 2 |5 points |Save |
| |Calculate the linear correlation coefficient for the following values: (2, 11),(2, 6),(10, 6),(18, 2) | | | | |
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|[pic] Question 3 |5 points |Save |
| |A survey revealed that 45% of people are entertained by reading books, 25% by watching TV, and 14% are | | | | |
| |entertained by both books and TV. What is the probability that a person will be entertained by books given | | | | |
| |that the person is entertained by TV? Give results to the nearest tenth of a percent. | | | | |
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|[pic] Question 4 |5 points |Save |
| |The frequency setting for a garage door opener is determined by the positions of nine switches, each of | | | | |
| |which can be set to a "+" or "-" position. In how many ways can the switches be set? | | | | |
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|[pic] Question 5 |5 points |Save |
| |A student is taking a standardized test consisting of multiple choice questions for which there are five | | | | |
| |options for each question. Seven points are awarded for each correct answer, but the student loses 2 points| | | | |
| |for an incorrect answer. Questions left blank neither receive nor lose points. Is it in the student's best | | | | |
| |interest to guess? | | | | |
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|[pic] Question 6 |5 points |Save |
| |Using the digits 3, 4, 5, 6, 7, 8, and 9, how many 5-digit numbers can be constructed if the number must | | | | |
| |begin with an odd digit and digits may not be repeated? | | | | |
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|[pic] Question 7 |5 points |Save |
| |If two fair dice are rolled, what is the probability that a total of three shows? | | | | |
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|[pic] Question 8 |5 points |Save |
| |Find the line of best fit for the following data. | | | | |
| |(24, 15), (26, 13), (28, 20), (30, 16), (32, 24) | | | | |
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| |y = 1.05x - 11.8 | | | | |
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|[pic] Question 9 |5 points |Save |
| |A box contains 26 blue marbles, 16 green marbles, and 8 red marbles. Two marbles are selected at random | | | | |
| |without replacement. Let E be the event that the first marble selected is green. Let F be the event that | | | | |
| |the second marble selected is green. Find P(F|E) . | | | | |
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|[pic] Question 10 |5 points |Save |
| |Find the mean, median, and mode for the given distribution of 8, 6, 5, 3, 12, 8, 8, 6, 3, 12, 8, 5, 15, | | | | |
| |3, 8, 8, 5, 6, 3, 8 | | | | |
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| |Mean = 7, median = 7, mode = 8 | | | | |
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|[pic] Question 11 |5 points |Save |
| |If a card is selected randomly from a standard 52-card deck, what is the probability that we draw a five?| | | | |
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|[pic] Question 12 |5 points |Save |
| |This double-bar graph shows the number of male (M) and female (F) athletes at a university over a | | | | |
| |four-year period. Which year had the greatest number of female athletes? | | | | |
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|[pic] Question 13 |5 points |Save |
| |For a school project, Sue interviewed a total of 100 persons who were either lawyers or salesmen. She | | | | |
| |asked them if they were happy or unhappy with their occupation. Of the 55 lawyers interviewed, 12 were | | | | |
| |unhappy, however, only 7 of the salesmen were unhappy. Suppose that one of the persons interviewed is | | | | |
| |selected at random. Find the probability that the person selected is happy. | | | | |
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|[pic] Question 14 |5 points |Save |
| |If a single card is drawn from a standard 52-card deck, what is the probability that it is either a six | | | | |
| |or a club? | | | | |
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|[pic] Question 15 |5 points |Save |
| |The ages of people randomly surveyed on a college campus are summarized in the bar graph. How many people| | | | |
| |were 24 years old? | | | | |
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|[pic] Question 16 |5 points |Save |
| |Assume that a distribution has a mean of 23 and a standard deviation of 6. What percentage of the values | | | | |
| |in the distribution do we expect to fall between 23 and 35? Assume that the given distribution is normal.| | | | |
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|[pic] Question 17 |5 points |Save |
| |Consider the genetic possibilities for a child of parents who are both carriers of sickle cell anemia. | | | | |
| |What is the probability that the child will be a carrier of sickle cell anemia? (Solve using a Punnett | | | | |
| |sqaure) | | | | |
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|[pic] Question 18 |5 points |Save |
| |Professor Kafka teaches an advanced probability class with an enrollment of 11 students. The front row | | | | |
| |has 9 chairs. A particular student, Carl, must sit in the front row between his tutor, Sue, and his best | | | | |
| |friend, Pat. In how many different ways can Professor Kafka assign students to sit in the first row? | | | | |
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| |I don’t think this question is clear. | | | | |
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|[pic] Question 19 |5 points |Save |
| |A box contains 26 blue marbles, 16 green marbles, and 8 red marbles. Two marbles are selected at random | | | | |
| |without replacement. Let E be the event that the first marble selected is green. Let F be the event that | | | | |
| |the second marble selected is green. Find P(F|E) . | | | | |
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|[pic] Question 20 |5 points |Save |
| |48% of the area under the standard normal curve is above the score. Use a table to find a z-score that | | | | |
| |fits the given conditions. Interpolate if necessary. | | | | |
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|[pic] Question 21 |5 points |Save |
| |Evaluate the expression [pic]. | | | | |
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|[pic] Question 22 |5 points |Save |
| |We roll a pair of dice. If the sum of the dice is 7, you pay me $25. If the sum is not 7, I pay you the | | | | |
| |number of dollars indicated by the sum of the dice. What is your expected value for the game? | | | | |
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|[pic] Question 23 |5 points |Save |
| |A survey revealed that 45% of people are entertained by reading books, 25% by watching TV, and 14% are | | | | |
| |entertained by both books and TV. What is the probability that a person will be entertained by books | | | | |
| |given that the person is entertained by TV? Give results to the nearest tenth of a percent. | | | | |
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|[pic] Question 24 |5 points |Save |
| |We roll a pair of dice. If the sum of the dice is 7, you pay me $25. If the sum is not 7, I pay you the | | | | |
| |number of dollars indicated by the sum of the dice. What is your expected value for the game? | | | | |
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|[pic] Question 25 |5 points |Save |
| |The table lists blood types in a sample of hospital patients. Construct a bar graph for the relative | | | | |
| |frequency data. | | | | |
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|[pic] Question 26 |5 points |Save |
| |The office manager at an accounting firm counted the number of employees that were in the coffee room | | | | |
| |each hour during the work week. The results are summarized in the following bar graph. Find the mean and | | | | |
| |standard deviation of the given data. Round to the nearest tenth, if necessary. | | | | |
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| |Mean = 3.8, standard deviation = 2.6 | | | | |
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|[pic] Question 27 |5 points |Save |
| |Suppose that the mean salary in a particular profession is $45,000 with a standard deviation of $2,000. | | | | |
| |To what percentile does a salary of $48,000 correspond? | | | | |
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|[pic] Question 28 |5 points |Save |
| |Assume that a distribution has a mean of 24 and a standard deviation of 6. What percentage of the values | | | | |
| |in the distribution do we expect to fall below 12? Assume that the given distribution is normal. | | | | |
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|[pic] Question 29 |5 points |Save |
| |A pair of fair dice are rolled. Let E be the event that a five shows on the second die. Let F be the | | | | |
| |event that the total showing is odd. Are E and F dependent events? | | | | |
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|[pic] Question 30 |5 points |Save |
| |Construct a box-and-whisker plot for the given data. | | | | |
| |The test scores of 32 students are listed below. | | | | |
| |32 37 41 44 46 48 53 55 | | | | |
| |57 57 59 63 65 66 68 69 | | | | |
| |70 71 74 74 75 77 78 79 | | | | |
| |81 82 83 86 89 92 95 99 | | | | |
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|[pic] Question 31 |5 points |Save |
| |There are 5 people in a club -- Cal, Elissa, Stephanie, Ken, and Pat. In how many ways can a President | | | | |
| |and a Treasurer be chosen for the club? (No person can hold both positions.) | | | | |
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|[pic] Question 32 |5 points |Save |
| |How many branches are required in a tree diagram showing how many ways three dice could be rolled? | | | | |
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|[pic] Question 33 |5 points |Save |
| |How many different three-digit numbers can you form using the digits 1, 2, 3, 5, 6, 7, and 9 without | | | | |
| |repetition? | | | | |
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|[pic] Question 34 |5 points |Save |
| |A student is taking a standardized test consisting of multiple choice questions for which there are five | | | | |
| |options for each question. Four points are awarded for each correct answer, but the student loses 2 | | | | |
| |points for an incorrect answer. Questions left blank neither receive nor lose points. What is the minimum| | | | |
| |number of options that the student should be able to rule out before making a guess on any particular | | | | |
| |question? | | | | |
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|[pic] Question 35 |5 points |Save |
| |A law firm has eight male and six female lawyers. A committee of five, two male lawyers and three female | | | | |
| |lawyers, is to be chosen to represent the firm at a conference. How many committees are possible? | | | | |
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|[pic] Question 36 |5 points |Save |
| |How many different two-digit numbers can you form using the digits 1, 2, 3, 5, 6, 7, and 9 with | | | | |
| |repetition allowed? | | | | |
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|[pic] Question 37 |5 points |Save |
| |Evaluate the expression P(6, 1) | | | | |
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|[pic] Question 38 |5 points |Save |
| |Find the mean and standard deviation of the given data. (Rounded to the nearest tenth) | | | | |
| |The following are the heights, in inches, of a group of college students: | | | | |
| |72, 68, 62, 64, 66, 74, 70, 60, 63, 67, 69, 67 | | | | |
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| |Mean = 66.8, standard deviation = 4.1 | | | | |
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|[pic] Question 39 |5 points |Save |
| |For a school project, Sue interviewed a total of 100 persons who were either lawyers or salesmen. She | | | | |
| |asked them if they were happy or unhappy with their occupation. Of the 55 lawyers interviewed, 12 were | | | | |
| |unhappy, however, only 7 of the salesmen were unhappy. Suppose that one of the persons interviewed is | | | | |
| |selected at random. Find the probability that the person selected is happy. | | | | |
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|[pic] Question 40 |5 points |Save |
| |Find the number of permutations when 6 objects are taken 5 at a time. | | | | |
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|[pic] Question 41 |5 points |Save |
| |If a single card is drawn from a standard 52-card deck, what is the probability that it is either a six | | | | |
| |or a club? | | | | |
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|[pic] Question 42 |5 points |Save |
| |Seven slips of paper marked with the numbers 1, 2, 3, 4, 5, 6, and 7 are placed in a box and mixed well. | | | | |
| |Two are drawn. What are the odds that the sum of the numbers on the two selected slips is 7? | | | | |
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|[pic] Question 43 |5 points |Save |
| |What is the probability that 12 rolls of a die will show exactly three fours? | | | | |
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|[pic] Question 44 |5 points |Save |
| |Assume that in your earth science class you have earned the following test scores: 99, 92, 81, 92; and | | | | |
| |only one test remains. If you need a mean score of 90 to earn a "A", then what minimum score must you | | | | |
| |obtain on the last test? | | | | |
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|[pic] Question 45 |5 points |Save |
| |If a card is selected randomly from a standard 52-card deck, what is the probability that we draw a five?| | | | |
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|[pic] Question 46 |5 points |Save |
| |Let M = {S, P, O, M}. List all of the ways that you can select two different members of M. The order in | | | | |
| |which you select the members is important. | | | | |
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| |SP, SO, SM, PS, PO, PM, OS, OP, OM, MS, MP, MO | | | | |
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|[pic] Question 47 |5 points |Save |
| |How many license plates are possible consisting of 4 letters followed by 4 digits, if the first letter | | | | |
| |must be a C? | | | | |
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| |175,760,000 | | | | |
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|[pic] Question 48 |5 points |Save |
| |Find the standard deviation. (Round to one more place than the data) | | | | |
| |17, 12, 18, 19, 19, 12, 10, 7, 11 | | | | |
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|[pic] Question 49 |5 points |Save |
| |The following table relates the grades in an advanced mathematics course to the student's year in | | | | |
| |college: | | | | |
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| |Let E be the event that the student received a grade of B. Let F be the event that the student is a | | | | |
| |sophomore. Find P(F|E). | | | | |
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|[pic] Question 50 |5 points |Save |
| |A box contains 3 blue cards numbered 1 through 3, and 4 green cards numbered 1 through 4. List the sample| | | | |
| |space of picking a blue card followed by a green card. | | | | |
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| |{(1, 1), (1, 2), (1, 3), (1, 4), (2, 1), (2, 2), (2, 3), (2, 4), (3, 1), (3, 2), (3, 3), (3, 4)} | | | | |
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