Twenty children are selected from a group of 28 boys and 22 girls. Set up the...
Twenty children are selected from a group of 28 boys and 22 girls. Set up the expression you would use to compute each problem. Do Not Simplify.
a) The provability that half are boys.
b) The probability that at least one is a boy.
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Twenty children are selected from a group of 28 boys and 22
girls. Set up the...
2.Exam-like questioin A class consists of 12 girls and 16 boys. Jane is one of the...
2.Exam-like questioin A class consists of 12 girls and 16 boys. Jane is one of the girls and Jonatharn is one of the boys. (i) In how many ways can we make a group of 2 girls and 3 boys? (ii) What is the probability that Jane is not in that group and Jonathan is? (iii) What is the probability that Jonathan is and Jane is not in a group of 5 students selected randomly out of the 28? (iv)...
In a study to compare the IQ between boys and girls in a particular elementary school,...
In a study to compare the IQ between boys and girls in a particular elementary school, a random sample of seventh grade boys and girls was taken from Vancouver Hill Elementary School. The girls and boys were asked to take an IQ test and their scores were recorded. Some summary statistics of the IQs of the boys and girls is given below. Gender Number of children measured Average IQ Standard deviations of IQ Boys 17 107.1 5.6 Girls 15 105.5...
Answer only 8.15, do not answer 8.14. If all work is shown, I will thumbs up....
Answer only 8.15, do not answer 8.14. If all work is shown, I
will thumbs up.
*8.14 The probability of a boy being born equals.50, or 1/,, as does the probability of a girl being born. For a randomly selected family with two children, what's the probability of (a) two boys, that is, a boy and a boy? (Reminder: Before using either the addition or multiplication rule, satisfy yourself that the various events are either mutually exclu- sive or independent,...
Question 1 (15 marks) Suppose that in a group of 100 boys and 100 girls there is a boy B, such th...
please
answer all parts i give you good feedback
Question 1 (15 marks) Suppose that in a group of 100 boys and 100 girls there is a boy B, such that B is second highest on every woman's preference list.Is possible that, in every stable matching, B ends up with the girl he likes le ast of all? If yes, give an example, if not, prove it. Questio n 2 (30 marks) The goal of this problem is to prove...
There are 13 girls and 7 boys in Ms. Sally's 3rd grade class waiting to have...
There are 13 girls and 7 boys in Ms. Sally's 3rd grade class waiting to have their individual photos taken for the current school year. If two students are being randomly selected without replacement, find the probability the second child chosen is a girl. Give your answer as a decimal rounded to 4 decimal places. (Hint: In this problem you may need to consider two cases. In the first case, the first child chosen is a boy and then the...
Example a) On this example we will examine the probability a couple who has 8 children...
Example a) On this example we will examine the probability a couple who has 8 children and has exactly 5 boys. b) Next we will look at the probability that they have more than 5 boys. c) Finally we will look at the probability that they have at most 5 boys. Assume a .5 chance of having a boy. Solution can be solved using excel. a) On this example we will examine the probability a couple who has 8 children...
Among 450 randomly selected drivers in the 20-24 age bracket, 9 were in a car crash...
Among 450 randomly selected drivers in the 20-24 age bracket, 9 were in a car crash in the last year. If a driver in that age bracket is randomly selected, what is the approximate probability that he or she will be in a car crash during the next year? Is it unlikely for a driver in that age bracket to be involved in a car crash during a year? Is the resulting value high enough to be of concern to...
Hypertension 5.6 Blood pressure (BP) in childhood tends to increase with age, but differently for boys...
Hypertension 5.6 Blood pressure (BP) in childhood tends to increase with age, but differently for boys and girls. Suppose that for both boys and girls, mean systolic blood pressure is 95 mm Hg at 3 years 5.7 of age and increases 1.5 mm Hg per year up to the age of 13. Furthermore, starting at age 13, the mean increases by 2 mm Hg per year for boys and 1 mm Hg per year for girls up to the 5.8...
Dont understand the practice example Example a) On this example we will examine the probability a...
Dont understand the practice example Example a) On this example we will examine the probability a couple who has 8 children and has exactly 5 boys. b) Next we will look at the probability that they have more than 5 boys. c) Finally we will look at the probability that they have at most 5 boys. Assume a .5 chance of having a boy. Solution can be solved using excel. a) On this example we will examine the probability a...
4.21 Game of dreidel. A dreidel is a four-sided spinning top with the Hebrew letters nun,...
4.21 Game of dreidel. A dreidel is a four-sided spinning top with the Hebrew letters nun, gimel, hei, and shin, one on each side. Each side is equally likely to come up in a single spin of the dreidel. Suppose you spin a dreidel three times. Calculate the probability of getting (a) at least one nun? (b) exactly 2 nuns? (c) exactly 1 hei? (a) at most 2 gimels? Photo by Staccabees, cropped (http://flic.kr/p/7gLZTA) CC BY 2.0 license 4.26 Male...
2.Exam-like questioin A class consists of 12 girls and 16 boys. Jane is one of the girls and Jonatharn is one of the boys. (i) In how many ways can we make a group of 2 girls and 3 boys? (ii) What is the probability that Jane is not in that group and Jonathan is? (iii) What is the probability that Jonathan is and Jane is not in a group of 5 students selected randomly out of the 28? (iv)...
Answer only 8.15, do not answer 8.14. If all work is shown, I
will thumbs up.
*8.14 The probability of a boy being born equals.50, or 1/,, as does the probability of a girl being born. For a randomly selected family with two children, what's the probability of (a) two boys, that is, a boy and a boy? (Reminder: Before using either the addition or multiplication rule, satisfy yourself that the various events are either mutually exclu- sive or independent,...
please
answer all parts i give you good feedback
Question 1 (15 marks) Suppose that in a group of 100 boys and 100 girls there is a boy B, such that B is second highest on every woman's preference list.Is possible that, in every stable matching, B ends up with the girl he likes le ast of all? If yes, give an example, if not, prove it. Questio n 2 (30 marks) The goal of this problem is to prove...
Among 450 randomly selected drivers in the 20-24 age bracket, 9 were in a car crash in the last year. If a driver in that age bracket is randomly selected, what is the approximate probability that he or she will be in a car crash during the next year? Is it unlikely for a driver in that age bracket to be involved in a car crash during a year? Is the resulting value high enough to be of concern to...
Hypertension 5.6 Blood pressure (BP) in childhood tends to increase with age, but differently for boys and girls. Suppose that for both boys and girls, mean systolic blood pressure is 95 mm Hg at 3 years 5.7 of age and increases 1.5 mm Hg per year up to the age of 13. Furthermore, starting at age 13, the mean increases by 2 mm Hg per year for boys and 1 mm Hg per year for girls up to the 5.8...
4.21 Game of dreidel. A dreidel is a four-sided spinning top with the Hebrew letters nun, gimel, hei, and shin, one on each side. Each side is equally likely to come up in a single spin of the dreidel. Suppose you spin a dreidel three times. Calculate the probability of getting (a) at least one nun? (b) exactly 2 nuns? (c) exactly 1 hei? (a) at most 2 gimels? Photo by Staccabees, cropped (http://flic.kr/p/7gLZTA) CC BY 2.0 license 4.26 Male...
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