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How many different ways can a visiting nurse visit 8 patients if she wants to visit...
Twenty people apply for seven jobs that are available at Fly-By-Night Aircraft Manufacturing Co. a. In how many different ways could such a group of seven people be composed? b. Twelve of the applicants are men and the rest are women. How many of these s
Twenty people apply for seven jobs that are available at Fly-By-Night Aircraft Manufacturing Co. a. In how many different ways could such a group of seven people be composed?b. Twelve of the applicants are men and the rest are women. How many of these seven-person groups have exactly three men? C. How many of these seven-person groups have exactly three men or exactly three women? d. What is the probability that a group of seven selected at random will have exactly three men or...
A freelance writer must choose how to spend her time working on several different types of projec...
A freelance writer must choose how to spend her time working on several different types of projects. Newspaper stories take 3 hours to write and pay a flat rate of $45 per story. Magazine articles take much longer to write (25 hours) but pay significantly better ($400 per article). Proofreading is often tedious, but the writer can always find proofreading jobs that pay $20 per hour. The writer wants to maximize her income, but doesn't want to work more than...
Applications Name 7-9, find each probability assuming three cards are drawn from an ordinary deck and not replacesd. 7. Getting three jacks 8. Getting an ace, a king, and a queen in order 9. Get...
Applications Name 7-9, find each probability assuming three cards are drawn from an ordinary deck and not replacesd. 7. Getting three jacks 8. Getting an ace, a king, and a queen in order 9. Getting a club, a spade, and a heart in order A survey of 200 college students shows the average number of text messages sent per month. Find each probability in Questions 10-13 Less than 1,000 56 61 1,000-1,999 18 18 2.000-2.999 10 13 3,000 or more...
4. Long-lasting drugs: One of the ways in which doctors try to determine how long a...
4. Long-lasting drugs: One of the ways in which doctors try to determine how long a single dose of pain reliever will provide relief is to measure the drug's half-life, which is the length of time it takes for one-half of the dose to be eliminated from the body. A report of the National Institutes of Health states that the standard deviation of the half-life of the pain reliever oxycodone is o=1.43 hours. Assume that a sample of 25 patients...
3. Suppose my graph theory class has 12 different students, of which 6 are under- grads and 6 are graduate students. (a). How many ways can I choose at least 4 but no more than 8 of my students to ta...
3. Suppose my graph theory class has 12 different students, of which 6 are under- grads and 6 are graduate students. (a). How many ways can I choose at least 4 but no more than 8 of my students to take a field trip to the library? (b). I want to repeat part (a), but I want to be sure to take at least 2 undergrads. (c). I have 3 different final projects for them to work on (projects A,...
1. How many different ways can you have r numbers 1 sum up to a number...
1. How many different ways can you have r numbers 1 sum up to a number n? These are called compositions of a number n and it is easy to calculate from our understanding of binomial coefficients. So the number of compositions of 4 into 3 parts will be 1+1+2, 1+2+1, and 2+1+1. Note how we think of 1+1+2 and 1+2+1 as different-because in the first case, the first number is 1, second is 1 and third is 2, while...
apter 1. Consider the following data on distances traveled by 100 people to visit the local...
apter 1. Consider the following data on distances traveled by 100 people to visit the local park. 1-8 30 25 20 15 10 9-16 17-24 25-32 33-40 Expand and construct the table adding columns for relative frequency and cumulative relative frequency. Then plot Histogram, Frequency Polygon and Ogive Curve. 2. Math test anxiety can be found throughout the general population. A study of 200 seniors at a local high school was conducted. The following table was produced from the data....
A nutritionist wants to determine how much time nationally people spend eating and drinking. Suppose for...
A nutritionist wants to determine how much time nationally people spend eating and drinking. Suppose for a random sample of 1069 people age 15 or older, the mean amount of time spent eating or drinking per day is 1.36 hours with a standard deviation of 0.67 hour. a) A histogram of time spent eating and drinking each day is skewed right. Use this result to explain why a large sample size is needed to construct a confidence interval for the...
Children and teenagers spend more than 7 hours a day with a variety of different media....
Children and teenagers spend more than 7 hours a day with a variety of different media. Television predominates, with more than 4 hours a day of screen time, although viewing may now be via a computer or a cell phone screen instead of a TV set. Media use represents the leading leisure time activity for young people—they spend more time with media than they do in any other activity except sleeping. Increasingly, preteens and teens are using new technologies (social...
Applications Name 7-9, find each probability assuming three cards are drawn from an ordinary deck and not replacesd. 7. Getting three jacks 8. Getting an ace, a king, and a queen in order 9. Getting a club, a spade, and a heart in order A survey of 200 college students shows the average number of text messages sent per month. Find each probability in Questions 10-13 Less than 1,000 56 61 1,000-1,999 18 18 2.000-2.999 10 13 3,000 or more...
4. Long-lasting drugs: One of the ways in which doctors try to determine how long a single dose of pain reliever will provide relief is to measure the drug's half-life, which is the length of time it takes for one-half of the dose to be eliminated from the body. A report of the National Institutes of Health states that the standard deviation of the half-life of the pain reliever oxycodone is o=1.43 hours. Assume that a sample of 25 patients...
3. Suppose my graph theory class has 12 different students, of which 6 are under- grads and 6 are graduate students. (a). How many ways can I choose at least 4 but no more than 8 of my students to take a field trip to the library? (b). I want to repeat part (a), but I want to be sure to take at least 2 undergrads. (c). I have 3 different final projects for them to work on (projects A,...
1. How many different ways can you have r numbers 1 sum up to a number n? These are called compositions of a number n and it is easy to calculate from our understanding of binomial coefficients. So the number of compositions of 4 into 3 parts will be 1+1+2, 1+2+1, and 2+1+1. Note how we think of 1+1+2 and 1+2+1 as different-because in the first case, the first number is 1, second is 1 and third is 2, while...
apter 1. Consider the following data on distances traveled by 100 people to visit the local park. 1-8 30 25 20 15 10 9-16 17-24 25-32 33-40 Expand and construct the table adding columns for relative frequency and cumulative relative frequency. Then plot Histogram, Frequency Polygon and Ogive Curve. 2. Math test anxiety can be found throughout the general population. A study of 200 seniors at a local high school was conducted. The following table was produced from the data....
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