HEART OF MATHEMATICS
4th Edition
ISBN: 9781119760061
Author: Burger
Publisher: WILEY
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Textbook Question
Chapter 9.5, Problem 23MS
Mendel genealogy (H). We return once again to Mendel’s snapdragon experiment from Mindscape 1. Suppose two second-generation crossbred plants mate. What is the possibility that the offspring will be white-flowered?
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QUESTION 6
1. Bowl A contains 3 red chips and 4 blue chips. Two of these 7 chips are selected at random and
without replacement and put in bowl B, which was originally empty. What is the probability that
the two blue chips (among two) transferred from bowl A to B?
Question 1
a) Three companies A, B and C supply 25%, 35% and 40% of the notebooks to a school. Past
experience shows that 5%, 4% and 2% of the notebooks produced by these companies are not
of good quality. If a notebook was found to be bad quality, what is the probability that the
notebook was supplied by A?
b) At Kennedy Middle School, the probability that a student takes Technology and Spanish is 0.087.
The probability that a student takes Technology is 0.68. What is the probability that a student
takes Spanish given that the student is taking Technology?
Chapter 9 Solutions
HEART OF MATHEMATICS
Ch. 9.1 - Embarrassing data. Suppose you asked 100 students...Ch. 9.1 - Hugging both parents (S). You ask 150 students to...Ch. 9.1 - Short test. To save time grading, a professor asks...Ch. 9.1 - Computer polls. Suppose dot-corn entrepreneurs...Ch. 9.1 - Voluntary grade inflation. The dean felt that a...Ch. 9.1 - Pornography (ExH). Suppose you asked 100 students...Ch. 9.1 - Cartoons. Suppose 380 students out of 1000 still...Ch. 9.1 - Bias beef (H). Suppose you have an assignment to...Ch. 9.1 - Drug data (ExH). You ask 250 students to answer...Ch. 9.1 - Kissing. You ask 180 students to answer the...
Ch. 9.1 - Cheating (S). Suppose 60 students out of 200...Ch. 9.1 - Dental hygiene. Suppose you want to know how often...Ch. 9.1 - More homework. In a recent survey of random...Ch. 9.1 - PBS. In the old days, the Nielsen ratings of...Ch. 9.1 - 9:00 AM versus 9:00 PM (H). You take a survey of...Ch. 9.1 - Internet askew. Find ads or articles on the Web...Ch. 9.1 - Sleazy survey (H). The mayor of a city seeks to...Ch. 9.1 - Bread winners? You want to know in what percentage...Ch. 9.1 - Beemer babies (H). You want to estimate what...Ch. 9.1 - Coffee, tea, or milk? Youre considering whether to...Ch. 9.1 - The dog pound. Otis the puppy grew approximately...Ch. 9.1 - Hows that again? An ambitious politician in your...Ch. 9.1 - Smells like team spirit. A losing basketball team...Ch. 9.1 - Stack me timbers. Every October, students from the...Ch. 9.1 - Risky business (H). In a psychology class, the...Ch. 9.1 - Risky II. The psychology instructor from the...Ch. 9.2 - Internet costs. Make a histogram of the data on...Ch. 9.2 - Internet costs—summaries (S). Find the mean and...Ch. 9.2 - Internet costs-more summaries. Compute the...Ch. 9.2 - How variable. Remember that the standard deviation...Ch. 9.2 - Pie or no pie. Below are two graphical...Ch. 9.2 - Stats on steroids. Harry Bonds and Mark McGwire...Ch. 9.2 - Whos the best—short summary. For the home-run...Ch. 9.2 - Will tomorrow be different? At the beginning of...Ch. 9.2 - How different are they? (S) The following...Ch. 9.2 - Whats normal? The histograms of three data sets...Ch. 9.2 - Check the bounce (ExH). Until 1992, members of...Ch. 9.2 - College data. Using the student survey data given...Ch. 9.2 - News data. Find some data in a recent newspaper or...Ch. 9.2 - Which half? Half of the people in the United...Ch. 9.2 - Grades. A student received the following quiz...Ch. 9.2 - Raising scores (ExH). A student received the...Ch. 9.2 - Mean and median (S). Give an example of a data set...Ch. 9.2 - Median and mean. Give an example of a data set...Ch. 9.2 - Some taxing statistics (H). Politicians love to...Ch. 9.2 - Whoops. Find an example in a recent newspaper or...Ch. 9.2 - Further whoops (H). A survey of 100 recent college...Ch. 9.2 - Is this normal? Suppose the data in the previous...Ch. 9.2 - Average the grades. In a math class of 23 men and...Ch. 9.2 - Taxes(ExH). Find an effective graphical...Ch. 9.2 - Kids in the hall. You have three cousins with mean...Ch. 9.2 - Testing the data. A math instructor reports the...Ch. 9.2 - One mean mean. Suppose an instructor reports exam...Ch. 9.2 - Home sweet home. For a political science project,...Ch. 9.2 - No back up (H). You have 120 pieces of data. They...Ch. 9.3 - I.D. please. Identify the Distributions below as...Ch. 9.3 - Deviating from the norm (H). The following three...Ch. 9.3 - Match quest. The following three data sets are...Ch. 9.3 - Doubt the dice. You have four different dice and...Ch. 9.3 - More matching. A class was quizzed on two...Ch. 9.3 - Gas guzzling. In the One-Die Random Gas Station...Ch. 9.3 - Dr Die. Suppose you doctor a standard six-sided...Ch. 9.3 - Dr. Mean (S). What is the mean roll you would...Ch. 9.3 - A podiatrist in the making. Suppose you ask the...Ch. 9.3 - Beanie babies (S). All freshmen entering...Ch. 9.3 - Retiring standards (ExH). A classmate describes a...Ch. 9.3 - Unseasonable weather. The average high temperature...Ch. 9.3 - Are you normal? Which of the following data sets...Ch. 9.3 - Warming Up? (H) Suppose we measure the temperature...Ch. 9.3 - Possibly uniform. Which of the following data sets...Ch. 9.3 - Under the normally spreading chestnut tree. A...Ch. 9.3 - Abnormal. Give two example of data sets from your...Ch. 9.3 - Heavry petting. You adopt a kitten from the animal...Ch. 9.3 - Less than normal. Here are some distributions that...Ch. 9.3 - Gas guzzling (ExH). Consider the Two-Dice Random...Ch. 9.3 - The 68-95-99.7rule. Referring back to a discussion...Ch. 9.3 - Heads up. The marching band is getting new...Ch. 9.3 - Knees up. Building on the previous Mindscape,...Ch. 9.3 - Mother Brown (H). The most popular pizza place...Ch. 9.3 - Scoring some Zs. Refer to the formula for the...Ch. 9.3 - 2Catchin some Zs. You happen to know the z-score...Ch. 9.4 - Sophomore survey. You want to survey all students...Ch. 9.4 - IntenaI confidence. Which of the following best...Ch. 9.4 - Voting bodies. Calculate the percentage of the...Ch. 9.4 - Play the percentages. If n=100, what is the value...Ch. 9.4 - Play the percentages backwards (S). If 1n=0.05...Ch. 9.4 - Election up for grabs. In the upcoming election...Ch. 9.4 - U.S. samples (S). Suppose you can be quite...Ch. 9.4 - Bigger confidence? Suppose a pollster reports that...Ch. 9.4 - Overlapping confidence. Suppose two surveys are...Ch. 9.4 - Does size matter? (ExH) You want to gather data...Ch. 9.4 - More voting bodies (H). You want to gather data...Ch. 9.4 - National poll. Suppose you do polling in each of...Ch. 9.4 - Dizzy Lincoln. The text describes a penny-spinning...Ch. 9.4 - Hire a consultant. A consulting firm analyzed...Ch. 9.4 - House of cards. Your friend hands you a deck of 52...Ch. 9.4 - A fish story (ExH). You are a biologist sampling...Ch. 9.4 - Political gamble. The mayor of a small city has...Ch. 9.4 - The power of placebo. A study of pain relief...Ch. 9.4 - Marge Innoverra. You test 100 light bulbs randomly...Ch. 9.4 - How many math students does it take …(S). How...Ch. 9.4 - … to screw in a lightbulb? How many light bulbs...Ch. 9.4 - Snack sample (H). A survey asking students whether...Ch. 9.4 - Stop the study (ExH). A 2006 NIH study of...Ch. 9.4 - The sniff test. In 2004 the British Medical...Ch. 9.4 - Roving report. In 2006 there was a scandal...Ch. 9.4 - Polling roundup (H). A polling organization wants...Ch. 9.4 - Rodent roundup. Your psychology class is planning...Ch. 9.4 - Even more confident. Mindscape 27 gives a more...Ch. 9.4 - ESP. Your psychology class does some experiments...Ch. 9.4 - Trying trials. Your roommate is supervising an...Ch. 9.5 - Mendels snapdragons. Another of Mendels...Ch. 9.5 - Telephone/soda twins. Suppose your school has 1000...Ch. 9.5 - Correlation comparison. Below are three...Ch. 9.5 - Percent practice. Convert the fractions below to...Ch. 9.5 - Family dinner. Recent studies have reported on the...Ch. 9.5 - More Mendel (S). Given Mendels snapdragon...Ch. 9.5 - Oedipus red. Given Mendels work described in...Ch. 9.5 - Oedipus white. Given Mende1 work described in...Ch. 9.5 - Prob. 9MSCh. 9.5 - Astrology. An experiment is done to test the value...Ch. 9.5 - Stressful diet. One hundred young women were given...Ch. 9.5 - Abstinence evidence? President George W. Bush...Ch. 9.5 - Matching correlations. Below are some scatterplots...Ch. 9.5 - Fast data (H). If you plot the wining Olympic mens...Ch. 9.5 - College town. You go to school in a college town....Ch. 9.5 - Car count (S). You wonder how many cars there are...Ch. 9.5 - For Mindscapes 19-22, say whether or not each is...Ch. 9.5 - For Mindscapes 19-22, say whether or not each is...Ch. 9.5 - For Mindscapes 19-22, say whether or not each is...Ch. 9.5 - For Mindscapes 19-22, say whether or not each is...Ch. 9.5 - Mendel genealogy (H). We return once again to...Ch. 9.5 - Martian genetics. A certain alien species has...Ch. 9.5 - More Martians. Given the scenario from the...Ch. 9.5 - Politics as usual. During the presidential...Ch. 9.5 - Going postal. Your company will sign a contract...Ch. 9.5 - Fast paradox (ExH). The correlation between year...Ch. 9.5 - Up and down. In the past year, the grade point...Ch. 9.5 - Modified Mendel. We again return to Mendel...Ch. 9.5 - Going extinct. A paleontologist has gathered data...Ch. 9.5 - Diners delight. There are five dining halls on...Ch. 9.5 - The candy man. Your math instructor brings a...Ch. 9.5 - The candy jars. Your math instructor brings two...Ch. 9.5 - Correlated chorus (H). The chorus has data on the...Ch. 9.5 - Correlated Britney. The Britney S. Fan Club has...
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- Question Carrow_forwardQUESTION 8 1. Bowl A contains 3 red chips and 4 blue chips. Two of these 7 chips are selected at random and without replacement and put in bowl B, which was originally empty. You chose one chip from bowl B, which turned out to be blue. What is the probability that you put two blue chips from A to B given that you chose blue chip from B?arrow_forwardQUESTION 4 A customer has approached a bank for a loan. Without further information, the bank believes there is a 4% chance that the customer will default on the loan. The bank can run a credit check on the customer. The check will yield either a favorable or an unfavorable report. From past experience, the bank believes that P(favorable report being received)| customer will default)= 1/40, and P(favorable report| customer will not default)= 99/100. If an unfavorable report is received, what is the probability that the customer will default on the loan? (use decimals for your answer)arrow_forward
- QUESTION 2 1. Bowl A contains four red and three white chips, and bowl B contains two red and four white chips. A chip is drawn at random from bowl A and transferred to bowl B. Compute the probability of then drawing a red chip from bowl B (rounded at 3rd decimal).arrow_forwardExample#1:A researcher wishes to examine whether time of day (morning versus afternoon) affects the memory of older and younger participants. He obtains a sample of 40 older individuals and 40 younger individuals and gives them a passage to read. They are later given a test over the passage (scores on the test could range from O to 30). HaJfofthe individuals are randomly assigned to read the passage and take the test in the morning, and the other half do so in the afternoon. The data are reported in the table below (the numbers represent mean test scores for each group; that is, “M" is mean). Afternoon Testing M=8 М-20 Morning Testing Older Adults M= 15 Younger Adults M= 16 6. Does there appear to be a main effect of age? 7. Does there appear to be an interaction between age and time of day? (Hint: Draw a line graph) 8. Describe in words the pattern of results depicted in these data (you do not need to include any statistics).arrow_forwardQUESTION 7 1. Bowl A contains 3 red chips and 4 blue chips. Two of these 7 chips are selected at random and without replacement and put in bowl B, which was originally empty. You choose one chip from bowl B. What is the probability that you choose a blue chip from B?arrow_forward
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