Madeline Adams

Questions

• A coin-operated machine sells plastic rings. It contains 4 yellow rings, 15 black rings, 0 orange rings, and 6 purple rings. Sarah puts a coin into the machine. What is the theoretical probability she gets a purple ring?
• How do you use the Counting Principle to find the probability of rolling a 4 on each of 4 number cubes?
• To one decimal place, what percentage of the area under the normal curve lies between #+-# 2 standard deviations of #mu#?
• Asurvey of 250 people eating out found that 112 plan to see a movie after their meal. What is the probability a person eating out will see a movie after their meal?
• You are taking a multiple choice test. Each question has 4 possible answers, 1 of which is correct. You were able to study 70% of the material and will get each of those questions right. Find the following?
• There are some number of math books, #m# on a shelf and sitting next to them are some number of natural science books, #n#. #m>n# and we know there are less than 10 of each. There are 1,209,600 ways to order the books. #m=?#
• What is the mean of #-5+(-15)#?
• You have 60 megabytes (MB) of space left on your mp3. You can choose to download song files that use 3.5 MB or video files that use 8 MB. You want to download at least 12 files. What is a graph showing the numbers of song and video files you can download?
• The correlation coefficient of a linear fit between two variables #X# and #Y# is #-1#. I want to know, does the line containing the points for the strong negative correlation always have a slope of negative one? Thanks :)
• How to handle statistics questions where survey responses add up to more than the number of survey participants?
• You measure 41 dogs' weights, and find they have a mean weight of 77 ounces. Assume the population standard deviation is 12.7 ounces?
• There are 11 pens in a box. 8 are black and 3 are red. Two pens are taken out without replacement. Work out the probability that two pens are the same colour? (4 marks)
• A survey of showed that 6% of families-1 child, 38% -2, 42%-3 and 10%-3 or more. A family is selected at random. What is the probability that it has some children?
• Find the number of ways to listen to four CDs from a selection of 8 CDs.? A. 1680 B. 336 C. 70 D. 50
• In how many ways can four men and four women be seated around a circular table if each man must be flanked by two women?
• The scenario may be considered which of the following?
• A fair coin is tossed 3 times. The probability of throwing 3 tails = 0.125, two tails = 0.375 and 1 tails = 0.375. What is the probability of throwing 1 head?
• Suppose you choose a marble from a bag containing 3 red marbles, 3 white marbles, and 5 blue marbles. you return the first marble to the bag and then choose again. find P(red then blue) what is the probability ?
• What is the complementary event of A?What are the probabilities of A and its complement?
• Please can you help with a question on probability from the Venn diagram given. ?
• 1
• •••
• 4
• 5
• 6
• 7
• 8