# Questions on Algebra: Probability and statistics answered by real tutors!

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 Algebra: Probability and statistics Solvers Lessons Answers archive Quiz In Depth

 Question 38283: Question: Lance's math quiz has eight true-false questions. How many different choices for giving answers to the eight questions is possible? How do you do this problem algebraically? Click here to see answer by fractalier(2101)
 Question 38283: Question: Lance's math quiz has eight true-false questions. How many different choices for giving answers to the eight questions is possible? How do you do this problem algebraically? Click here to see answer by checkley71(8403)

 Question 38180: In a srvey,80 computerscience teachers were asked which of the three programming languages, Pascal,Fortran and C,have they used to introduce programming to students.40 teachers said they have used Pascal,35 said they have used Fortran,25 said they have used C,20 said they have used both Pascal and Fortran,17 said they have used Pascal and C, 5 said they have used Fortran and C,and 3 said they have used all the three languages. a)How many teachers have used Fortran alone? b)How many teachers have used both Pascal and C? c)How many teachers have used Fortran, but not C? d)How many used none of the three languages? Click here to see answer by khwang(438)

 Question 38353: ```The following sample shows the shirt colors of a random sample of students in school. Find the experimental probability a student chosen at random is wearing a white shirt. blue 8 red 7 white 12 other 3``` Click here to see answer by AnlytcPhil(1278)

 Question 38352: You randomly select two letters from eight tiles that spell G.E.O.M.E.T.R.Y. replacing the first before you select the second,what is the probability that you will select two E's Click here to see answer by AnlytcPhil(1278)

 Question 38562: The 8 people at a party shook hands exactly once with each of the others before the 9th arrived. The 9th person then shook hands with some of these 8 people. A total of 32 handshakes took place. With how many people did the 9th person shake hands? Click here to see answer by AnlytcPhil(1278)
 Question 38562: The 8 people at a party shook hands exactly once with each of the others before the 9th arrived. The 9th person then shook hands with some of these 8 people. A total of 32 handshakes took place. With how many people did the 9th person shake hands? Click here to see answer by fractalier(2101)

 Question 38643: Given the following set of numbers: {-1, 1 , 2, 3} One number is to be chosen at random and labeled x. Then the second number is to be chosen and labeled y. If repetition of the digits is not allowed, what is the probability that when plotted in rectangular coordinates, the point (x,y) will be in the first quadrant? Click here to see answer by Nate(3500)

 Question 38874: I'm in need of help on this worksheet i'm doing. One of the questions goes like this and i don't get it. Captain Praub Ability had much to do. He glanced at his to-do list. 1. Save a damsel in distress 2. Get cat out of tree 3. Defeat the evil megalomaniac atop the moutain tower 4. Rent tux for Crime Fighters 17th annual Award ceremony 5. Pick up crime-fighting-hero suit from dry cleaners 6. Clean out refrigerator 7. Get groceries If order does matter, how many orders are there for the seven items on Praub Ability's list? Click here to see answer by Nate(3500)

 Question 39129: Pat is to select 6 cookies from a tray containing only chocolate chip,oatmeal & peanut butter cookies. There are at least 6 of each of these 3 kinds of cookies on the tray. Howmany different assorttments of 6cookies can be selected? Click here to see answer by AnlytcPhil(1278)

 Question 39272: A pair of 8 sided dice have sides numbered 1 through 8. Each side has the same probability of landing face up. Find the probability that the product of the 2 numbers on the sides that land face up exceeds 36. Click here to see answer by Nate(3500)
 Question 39272: A pair of 8 sided dice have sides numbered 1 through 8. Each side has the same probability of landing face up. Find the probability that the product of the 2 numbers on the sides that land face up exceeds 36. Click here to see answer by josmiceli(9817)

 Question 39270: Using the letters A,M,O,S,U. We can form 120 five letter "words". If these "words" are arranged in alphabetical order, then what position the "word" USAMO occupies? Click here to see answer by josmiceli(9817)

 Question 39271: The 600 students at King Middle School are divided into 3 groups of equal size for lunch. Each group has lunch at a different time. A computer randomly assigns each student to one of 3 lunch groups. Find the probability that 3 friends, AL,Bob,Carol will be asigned to the same lunch group. Click here to see answer by stanbon(57966)
 Question 39271: The 600 students at King Middle School are divided into 3 groups of equal size for lunch. Each group has lunch at a different time. A computer randomly assigns each student to one of 3 lunch groups. Find the probability that 3 friends, AL,Bob,Carol will be asigned to the same lunch group. Click here to see answer by longjonsilver(2297)

 Question 39365: suppose you have a bag that contains seven yellow, eight blue, and ten red marbles. You draw two marbles without replacement. What is the probability that both marbles are red? Click here to see answer by checkley71(8403)

 Question 39388: Dallastown has a population of 15,300 and is growing at an exponential rate. What will be the population of the city in 5 years if it continues to grow at the same rate? Click here to see answer by fractalier(2101)

 Question 39324: what measure is always the same as the a. 50th percentile? b. 25th percentile? c. 75th percentile? Click here to see answer by fractalier(2101)

 Question 39553: A band has 4 trumpets, 3 trombones, 3 saxophones & 2 drums. If each section has its own set of seats, in how many ways can the 12 band members be seated? Click here to see answer by AnlytcPhil(1278)

 Question 39638: Suppose that an experiment is repeated four times. A certain event has probability 1/10 in a single repetition of the experiment. What is the probability that it occurs at least once? Click here to see answer by venugopalramana(3286)

 Question 39637: Suppose that an experiment is repeated four times. A certain event has probability 1/10 in a single repetition of the experiment. What is the probability that it never occurs? Click here to see answer by venugopalramana(3286)

 Question 39636: A university football stadium has 1/6 of its students' seats in the end zones. If tickets are randomly selected and mailed to students, what is the probability that a certain student would get end zone seats at all 5 home games? Click here to see answer by venugopalramana(3286)

 Question 39000: You have to choose from the following letters for a name, P,R,O,B,&,S,T,A,S. the only rule was, a P had to start the word (the repeated S's and T's count as four different letters to choose from.) How many possiable arrangements are there for your name if you have to use all the letters. Click here to see answer by stanbon(57966)

 Question 39860: The local sandwich shop has 3 cash registers. In howmany possible ways can 4 customers lineup at the registers? Click here to see answer by fractalier(2101)

 Question 40008: Given P(A)=.45, P(B)=.31 calculate: P(A|B) P(B|A) I do not know the source of this problem. I'm simply trying to find help for a friend. She was having trouble with 4 problems that she was trying to understand. I told her about the wonderful online math resources that are available. Thank you for any help in helping her understand these types of problems. Click here to see answer by AnlytcPhil(1278)

 Question 40007: The city water department estimates that for any day in January, the probability of a water main freezing and breaking is 2. For six consecutive days no water mains break. What is the probability that this will happen? I don't know what textbook this is from. A friend needed some help trying to understand 5 problems out of many that she had been given for an assignment. I told her about the wonderful online tutoring resources that are available. Click here to see answer by AnlytcPhil(1278)

 Question 40009: A city in the USA is trying to increase tourism. The tourism division would like to include in its tourism brochure the middle range of temperatures that occur on 90% of the days there. A check with the Weather Service finds that the average temperature in this city is 76 degrees with a standard deviation of 5.7 (the temperatures were normally distributed). Find the two temperatures that cut off the middle 90% of temperatures in this city. I don't know the source of this problem. I'm trying to get some help for a friend who is trying to understand these type of problems. Thank you for your assistance. Click here to see answer by stanbon(57966)

 Question 40095: A QDA instructor gave a class two tests. 25% of the class passed both tests and 42% passed the first test. What percentage of those who passed the first test also passed the second test? Click here to see answer by fractalier(2101)

 Question 40094: A QDA instructor gave a class two tests. 25% of the class passed both tests and 42% passed the first test. What percentage of those who passed the first test also passed the second test? Click here to see answer by fractalier(2101)

 Question 40093: What is the probability of getting two 5's in a row when rolling die? What is the probability of selecting two Queeens in a row from a deck of cards? Click here to see answer by fractalier(2101)

 Question 40210: if i take a trip to michigan traveling 50 miles per hour and on the way back taking the same route travel 60 miles per hour how many miles would i have traveled to michigan if the round trip took 10 hours? Click here to see answer by Paul(988)

 Question 40248: A deck of playing cards contains 26 red and 26 black cards. Two cards are drawn from the deck at one time and without replacement. what is the probability or drawing 2 black cards? Click here to see answer by Nate(3500)

 Question 40310: Please help? Two urns contain each contain white balls and black balls. Urn 1 contains four white balls and two black balls urn 2 contains six white balls and five black balls. A ball is drawn from each urn. What is the probability that both balls are black? Click here to see answer by fractalier(2101)
 Question 40310: Please help? Two urns contain each contain white balls and black balls. Urn 1 contains four white balls and two black balls urn 2 contains six white balls and five black balls. A ball is drawn from each urn. What is the probability that both balls are black? Click here to see answer by Fermat(127)
 Question 40310: Please help? Two urns contain each contain white balls and black balls. Urn 1 contains four white balls and two black balls urn 2 contains six white balls and five black balls. A ball is drawn from each urn. What is the probability that both balls are black? Click here to see answer by AnlytcPhil(1278)

 Question 40311: Please Help In an algebra class, 21 students are competing to see who can create the most interesting problem involving permutations or combinations. Each student is allowed to submit only one entry. A first prize and a second prize will be awarded. In how many different ways can the instructor award one first prize and one second prize? Click here to see answer by fractalier(2101)
 Question 40311: Please Help In an algebra class, 21 students are competing to see who can create the most interesting problem involving permutations or combinations. Each student is allowed to submit only one entry. A first prize and a second prize will be awarded. In how many different ways can the instructor award one first prize and one second prize? Click here to see answer by Nate(3500)

 Question 40312: George is watching videos at home. In his videotape library, he has four adventure films and five comedies. If he chooses to watch two different videos, what is the probability that both are comedies? Please help Click here to see answer by fractalier(2101)
 Question 40312: George is watching videos at home. In his videotape library, he has four adventure films and five comedies. If he chooses to watch two different videos, what is the probability that both are comedies? Please help Click here to see answer by Nate(3500)

 Question 40313: Taylor tosses three coins. The event E is "exactly two coins land heads." What is the probability,P(E) that Taylor tosses exactly two heads? P(E)=n(E)/n(S)=____/_____??? Click here to see answer by Nate(3500)

 Question 40317: One last one for the day...I am so impressed by the timely response! For their family dinner, a local restaurant lets you choose three dishes from column A and two dishes from column B. There are eight items in column A and five items in column B. If no items are repeated how many different dinners are possible? Click here to see answer by Nate(3500)

 Question 40327: Can someone please help me with this question. A QDA Instructor gave a class two tests. 25% of the class passed both tests and 42% passed the first test. What percentage of those who passed the first test also passed the second test? Thanks for your help Click here to see answer by fractalier(2101)

 Question 40425: i dont get how to do experimental and theoretical probablities.please explain these to me with a few examples. Click here to see answer by rajagopalan(158)

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