All Matches
Solution Library
Expert Answer
Textbooks
Search Textbook questions, tutors and Books
Oops, something went wrong!
Change your search query and then try again
Toggle navigation
FREE Trial
S
Books
FREE
Tutors
Study Help
Expert Questions
Accounting
General Management
Mathematics
Finance
Organizational Behaviour
Law
Physics
Operating System
Management Leadership
Sociology
Programming
Marketing
Database
Computer Network
Economics
Textbooks Solutions
Accounting
Managerial Accounting
Management Leadership
Cost Accounting
Statistics
Business Law
Corporate Finance
Finance
Economics
Auditing
Ask a Question
Search
Search
Sign In
Register
study help
business
business statistics
Questions and Answers of
Business Statistics
Is it likely that there will be no teens killed from motor vehicle injuries on any given day in the U.S? Justify your answer numerically.On average, eight teens in the U.S. die from motor vehicle
Is it likely that there will be more than 20 teens killed from motor vehicle injuries on any given day in the U.S.? Justify your answer numerically.On average, eight teens in the U.S. die from motor
A group of Martial Arts students is planning on participating in an upcoming demonstration. Six are students of Tae Kwon Do; seven are students of Shotokan Karate. Suppose that eight students are
In one of its Spring catalogs, L.L. Bean® advertised footwear on 29 of its 192 catalog pages. Suppose we randomly survey 20 pages. We are interested in the number of pages that advertise footwear.
Suppose that a technology task force is being formed to study technology awareness among instructors. Assume that ten people will be randomly chosen to be on the committee from a group of 28
Suppose that nine Massachusetts athletes are scheduled to appear at a charity benefit. The nine are randomly chosen from eight volunteers from the Boston Celtics and four volunteers from the New
A bridge hand is defined as 13 cards selected at random and without replacement from a deck of 52 cards. In a standard deck of cards, there are 13 cards from each suit: hearts, spades, clubs, and
According to a recent article the average number of babies born with significant hearing loss (deafness) is approximately two per 1,000 babies in a healthy baby nursery. The number climbs to an
Define the random variable and list its possible values.Recently, a nurse commented that when a patient calls the medical advice line claiming to have the flu, the chance that he or she truly has the
State the distribution of X.Recently, a nurse commented that when a patient calls the medical advice line claiming to have the flu, the chance that he or she truly has the flu (and not just a nasty
Find the probability that at least four of the 25 patients actually have the flu.Recently, a nurse commented that when a patient calls the medical advice line claiming to have the flu, the chance
On average, for every 25 patients calling in, how many do you expect to have the flu?Recently, a nurse commented that when a patient calls the medical advice line claiming to have the flu, the chance
People visiting video rental stores often rent more than one DVD at a time. The probability distribution for DVD rentals per customer at Video To Go is given Table 4.5. There is five-video limit per
A school newspaper reporter decides to randomly survey 12 students to see if they will attend Tet (Vietnamese New Year) festivities this year. Based on past years, she knows that 18% of students
The expected number of wins for that upcoming month is:a. 1.67b. 12c. 382/1043d. 4.43 Let X = the number of games won in that upcoming month.The probability that the San Jose Sharks will win any
What is the probability that the San Jose Sharks win six games in that upcoming month?a. 0.1476b. 0.2336c. 0.7664d. 0.8903 The probability that the San Jose Sharks will win any given game is 0.3694
What is the probability that the San Jose Sharks win at least five games in that upcoming montha. 0.3694b. 0.5266c. 0.4734d. 0.2305
A student takes a ten-question true-false quiz, but did not study and randomly guesses each answer. Find the probability that the student passes the quiz with a grade of at least 70% of the questions
A student takes a 32-question multiple-choice exam, but did not study and randomly guesses each answer. Each question has three possible choices for the answer. Find the probability that the student
Six different colored dice are rolled. Of interest is the number of dice that show a one.a. In words, define the random variable X.b. List the values that X may take on.c. On average, how many dice
More than 96 percent of the very largest colleges and universities (more than 15,000 total enrollments) have some online offerings. Suppose you randomly pick 13 such institutions. We are interested
Suppose that about 85% of graduating students attend their graduation. A group of 22 graduating students is randomly chosen.a. In words, define the random variable X.b. List the values that X may
At The Fencing Center, 60% of the fencers use the foil as their main weapon. We randomly survey 25 fencers at The Fencing Center. We are interested in the number of fencers who do not use the foil as
Approximately 8% of students at a local high school participate in after-school sports all four years of high school. A group of 60 seniors is randomly chosen. Of interest is the number who
The chance of an IRS audit for a tax return with over $25,000 in income is about 2% per year. We are interested in the expected number of audits a person with that income has in a 20-year period.
It has been estimated that only about 30% of California residents have adequate earthquake supplies. Suppose you randomly survey 11 California residents. We are interested in the number who have
There are two similar games played for Chinese New Year and Vietnamese New Year. In the Chinese version, fair dice with numbers 1, 2, 3, 4, 5, and 6 are used, along with a board with those numbers.
According to The World Bank, only 9% of the population of Uganda had access to electricity as of 2009. Suppose we randomly sample 150 people in Uganda. Let X = the number of people who have access to
The literacy rate for a nation measures the proportion of people age 15 and over that can read and write. The literacy rate in Afghanistan is 28.1%. Suppose you choose 15 people in Afghanistan at
A consumer looking to buy a used red Miata car will call dealerships until she finds a dealership that carries the car. She estimates the probability that any independent dealership will have the car
Suppose that the probability that an adult in America will watch the Super Bowl is 40%. Each person is considered independent. We are interested in the number of adults in America we must survey
It has been estimated that only about 30% of California residents have adequate earthquake supplies. Suppose we are interested in the number of California residents we must survey until we find a
In one of its Spring catalogs, L.L. Bean® advertised footwear on 29 of its 192 catalog pages. Suppose we randomly survey 20 pages. We are interested in the number of pages that advertise footwear.
Suppose that you are performing the probability experiment of rolling one fair six-sided die. Let F be the event of rolling a four or a five. You are interested in how many times you need to roll the
Ellen has music practice three days a week. She practices for all of the three days 85% of the time, two days 8% of the time, one day 4% of the time, and no days 3% of the time. One week is selected
The World Bank records the prevalence of HIV in countries around the world. According to their data, “Prevalence of HIV refers to the percentage of people ages 15 to 49 who are infected with
According to a recent Pew Research poll, 75% of millenials (people born between 1981 and 1995) have a profile on a social networking site. Let X = the number of millenials you ask until you find a
The switchboard in a Minneapolis law office gets an average of 5.5 incoming phone calls during the noon hour on Mondays. Experience shows that the existing staff can handle up to six calls in an
The maternity ward at Dr. Jose Fabella Memorial Hospital in Manila in the Philippines is one of the busiest in the world with an average of 60 births per day. Let X = the number of births in an
A manufacturer of Christmas tree light bulbs knows that 3% of its bulbs are defective. Find the probability that a string of 100 lights contains at most four defective bulbs using both the binomial
The average number of children a Japanese woman has in her lifetime is 1.37. Suppose that one Japanese woman is randomly chosen.a. In words, define the random variable X.b. List the values that X may
The average number of children a Spanish woman has in her lifetime is 1.47. Suppose that one Spanish woman is randomly chosen.a. In words, define the Random Variable X.b. List the values that X may
Fertile, female cats produce an average of three litters per year. Suppose that one fertile, female cat is randomly chosen.In one year, find the probability she produces:a. In words, define the
The chance of having an extra fortune in a fortune cookie is about 3%. Given a bag of 144 fortune cookies, we are interested in the number of cookies with an extra fortune. Two distributions may be
According to the South Carolina Department of Mental Health web site, for every 200 U.S. women, the average number who suffer from anorexia is one. Out of a randomly chosen group of 600 U.S. women
The chance of an IRS audit for a tax return with over \($25,000\) in income is about 2% per year. Suppose that 100 people with tax returns over \($25,000\) are randomly picked. We are interested in
Approximately 8% of students at a local high school participate in after-school sports all four years of high school. A group of 60 seniors is randomly chosen. Of interest is the number that
On average, Pierre, an amateur chef, drops three pieces of egg shell into every two cake batters he makes. Suppose that you buy one of his cakes.a. In words, define the random variable X.b. List the
In words, the random variable X = _________________a. the number of times Mrs. Plum’s cats wake her up each week.b. the number of times Mrs. Plum’s cats wake her up each hour.c. the number of
Find the probability that her cats will wake her up no more than five times next week.a. 0.5000b. 0.9329c. 0.0378d. 0.0671
Fill in the blankX ~ N(1, 2)σ = _______
In a survey, 40 people were asked how many times they visited a store before making a major purchase. The results areshown in Table 2.34. Number of times in store Frequency 1 4 2 10 3 16 4 6 5 4
In a survey, several people were asked how many years it has been since they purchased a mattress. The results are shown in Table 2.35. Years since last purchase Frequency 0 1 2 8 2 3 4 13 22 16 5 9
Several children were asked how many TV shows they watch each day. The results of the survey are shown in Table 2.36. Number of TV Shows Frequency 0 1 12 18 2 36 3 7 4 2 Table 2.36
The students in Ms. Ramirez’s math class have birthdays in each of the four seasons. Table 2.37 shows the four seasons, the number of students who have birthdays in each season, and the percentage
Using the data from Mrs. Ramirez’s math class supplied in Exercise 2.4, construct a bar graph showing the percentages.Exercise 2.4,The students in Ms. Ramirez’s math class have birthdays in each
David County has six high schools. Each school sent students to participate in a county-wide science competition. Table 2.38 shows the percentage breakdown of competitors from each school, and the
Use the data from the David County science competition supplied in Exercise 2.6. Construct a bar graph that shows the county-wide population percentage of students at each school.Exercise 2.6.David
Sixty-five randomly selected car salespersons were asked the number of cars they generally sell in one week. Fourteen people answered that they generally sell three cars; nineteen generally sell four
What does the frequency column in Table 2.39 sum to? Why? Data Value (# cars) Frequency Relative Frequency Cumulative Relative Frequency Table 2.39
What does the relative frequency column in Table 2.39 sum to? Why? Data Value (# cars) Frequency Relative Frequency Cumulative Relative Frequency Table 2.39
To construct the histogram for the data in Table 2.39, determine appropriate minimum and maximum x and y values and the scaling. Sketch the histogram. Label the horizontal and vertical axes with
Construct a frequency polygon for the following: a. b. Pulse Rates for Women Frequency 60-69 12 70-79 14 80-89 11 90-99 1 100-109 1 110-119 0 120-129 1 Table 2.40 Actual Speed in a 30 MPH Zone
Construct a frequency polygon from the frequency distribution for the 50 highest ranked countries for depth of hunger. Depth of Hunger Frequency 230-259 21 260-289 13. 290-319 5 320-349 7 350-379 1
Use the two frequency tables to compare the life expectancy of men and women from 20 randomly selected countries.Include an overlayed frequency polygon and discuss the shapes of the distributions,
Construct a times series graph for(a) the number of male births,(b) the number of female births, and(c) the total number of births. 1857 Male Total Sex/Year 1855 1856 1858 1859 1860 Female 45,545
The following data sets list full time police per 100,000 citizens along with homicides per 100,000 citizens for the city of Detroit, Michigan during the period from 1961 to 1973.a. Construct a
Listed are 29 ages for Academy Award winning best actors in order from smallest to largest.18; 21; 22; 25; 26; 27; 29; 30; 31; 33; 36; 37; 41; 42; 47; 52; 55; 57; 58; 62; 64; 67; 69; 71; 72; 73; 74;
Listed are 32 ages for Academy Award winning best actors in order from smallest to largest.18; 18; 21; 22; 25; 26; 27; 29; 30; 31; 31; 33; 36; 37; 37; 41; 42; 47; 52; 55; 57; 58; 62; 64; 67; 69; 71;
Jesse was ranked 37th in his graduating class of 180 students. At what percentile is Jesse’s ranking?
a. For runners in a race, a low time means a faster run. The winners in a race have the shortest running times. Is it more desirable to have a finish time with a high or a low percentile when running
a. For runners in a race, a higher speed means a faster run. Is it more desirable to have a speed with a high or a low percentile when running a race?b. The 40th percentile of speeds in a particular
On an exam, would it be more desirable to earn a grade with a high or low percentile? Explain.
Mina is waiting in line at the Department of Motor Vehicles (DMV). Her wait time of 32 minutes is the 85th percentile of wait times. Is that good or bad? Write a sentence interpreting the 85th
In a survey collecting data about the salaries earned by recent college graduates, Li found that her salary was in the 78th percentile. Should Li be pleased or upset by this result? Explain.
In a study collecting data about the repair costs of damage to automobiles in a certain type of crash tests, a certain model of car had $1,700 in damage and was in the 90th percentile. Should the
The University of California has two criteria used to set admission standards for freshman to be admitted to a college in the UC system:a. Students' GPAs and scores on standardized tests (SATs and
Suppose that you are buying a house. You and your realtor have determined that the most expensive house you can afford is the 34th percentile. The 34th percentile of housing prices is $240,000 in the
First quartile = _______
Second quartile = median = 50th percentile = _______
Third quartile = _______
Interquartile range (IQR) = _____ – _____ = _____
10th percentile = _______
70th percentile = _______
Find the mean for the following frequency tables. Frequency a. Grade 49.5-59.5 2 59.5-69.5 3 69.5-79.5 8 79.5-89.5 12 89.5-99.5 5 Table 2.51 b. Daily Low Temperature Frequency 49.5-59.5 53 59.5-69.5
Calculate the mean.The following data show the lengths of boats moored in a marina. The data are ordered from smallest to largest: 16; 17; 19; 20; 20; 21; 23; 24; 25; 25; 25; 26; 26; 27; 27; 27; 28;
Identify the median.The following data show the lengths of boats moored in a marina. The data are ordered from smallest to largest: 16; 17; 19; 20; 20; 21; 23; 24; 25; 25; 25; 26; 26; 27; 27; 27; 28;
Identify the mode.The following data show the lengths of boats moored in a marina. The data are ordered from smallest to largest: 16; 17; 19; 20; 20; 21; 23; 24; 25; 25; 25; 26; 26; 27; 27; 27; 28;
sample mean = X̅ = _______ Sixty-five randomly selected car salespersons were asked the number of cars they generally sell in one week. Fourteen people answered that they generally sell three
median = _______ Sixty-five randomly selected car salespersons were asked the number of cars they generally sell in one week. Fourteen people answered that they generally sell three cars;nineteen
mode = _______ Sixty-five randomly selected car salespersons were asked the number of cars they generally sell in one week. Fourteen people answered that they generally sell three cars;nineteen
A group of 10 children are on a scavenger hunt to find different color rocks. The results are shown in the Table 2.54 below. The column on the right shows the number of colors of rocks each child
A group of children are measured to determine the average height of the group. The results are in Table 2.55 below.What is the mean height of the group to the nearest hundredth of an inch? Child
A person compares prices for five automobiles. The results are in Table 2.56. What is the mean price of the cars the person has considered? Price $20,987 $22,008 $19,998 $23,433 $21,444 Table 2.56
A customer protection service has obtained 8 bags of candy that are supposed to contain 16 ounces of candy each. The candy is weighed to determine if the average weight is at least the claimed 16
A teacher records grades for a class of 70, 72, 79, 81, 82, 82, 83, 90, and 95. What is the mean of these grades?
A family is polled to see the mean of the number of hours per day the television set is on. The results, starting with Sunday, are 6, 3, 2, 3, 1, 3, and 7 hours. What is the average number of hours
A city received the following rainfall for a recent year. What is the mean number of inches of rainfall the city received monthly, to the nearest hundredth of an inch? Use Table 2.58. Month Rainfall
A football team scored the following points in its first 8 games of the new season. Starting at game 1 and in order the scores are 14, 14, 24, 21, 7, 0, 38, and 28. What is the mean number of points
What is the geometric mean of the data set given? 5, 10, 20
Showing 800 - 900
of 2206
First
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Last