Intro Stats, Books a la Carte Edition (5th Edition)
5th Edition
ISBN: 9780134210285
Author: Richard D. De Veaux, Paul Velleman, David E. Bock
Publisher: PEARSON
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Chapter 12, Problem 16E
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There are four white, fourteen blue and five green marbles in a bag. A marble is selected from the bag without looking. Find the odds of the following:
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What is true about the above odds? Explain
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Chapter 12 Solutions
Intro Stats, Books a la Carte Edition (5th Edition)
Ch. 12.1 - One common proposal for beating the lottery is to...Ch. 12.3 - We sampled some pages of this book at random to...Ch. 12.3 - Prob. 3JCCh. 12.5 - Prob. 4JCCh. 12.6 - Prob. 5JCCh. 12 - Flipping a coin Flipping a fair coin is said to...Ch. 12 - Dice Rolling a fair six-sided die is supposed to...Ch. 12 - Flipping a coin II Your friend says: I flipped...Ch. 12 - Dice II After rolling doubles on a pair of dice...Ch. 12 - Wardrobe In your dresser are five blue shirts,...
Ch. 12 - Prob. 6ECh. 12 - Cell phones and surveys A 2015 study conducted by...Ch. 12 - Cell phones and surveys II The survey by the...Ch. 12 - Pet ownership Suppose that 25% of people have a...Ch. 12 - Cooking and shopping Forty-five percent of...Ch. 12 - Sports What is the probability that a person likes...Ch. 12 - Sports again From Exercise 11, if someone doesnt...Ch. 12 - Late to the train A student figures that he has a...Ch. 12 - Field goals A nervous kicker usually makes 70% of...Ch. 12 - Titanic On the Titanic, the probability of...Ch. 12 - Prob. 16ECh. 12 - Facebook Facebook reports that 70% of its users...Ch. 12 - Prob. 18ECh. 12 - Prob. 19ECh. 12 - Prob. 20ECh. 12 - Prob. 21ECh. 12 - Online banking last time Given the probabilities...Ch. 12 - Sample spaces For each of the following, list the...Ch. 12 - Sample spaces II For each of the following, list...Ch. 12 - Prob. 25ECh. 12 - Rain The weather reporter on TV makes predictions...Ch. 12 - Winter Comment on the following quotation: What I...Ch. 12 - Snow After an unusually dry autumn, a radio...Ch. 12 - Auto insurance Insurance companies collect annual...Ch. 12 - Prob. 30ECh. 12 - Prob. 31ECh. 12 - Prob. 32ECh. 12 - Electronics Suppose that 46% of families living in...Ch. 12 - Homes Funding for many schools comes from taxes...Ch. 12 - Prob. 35ECh. 12 - Lefties Although its hard to be definitive in...Ch. 12 - Prob. 37ECh. 12 - Prob. 38ECh. 12 - Car repairs A consumer organization estimates that...Ch. 12 - Stats projects In a large Introductory statistics...Ch. 12 - More repairs Consider again the auto repair rates...Ch. 12 - Another project You are assigned to be part of a...Ch. 12 - Prob. 43ECh. 12 - Final project You used the Multiplication Rule to...Ch. 12 - Prob. 45ECh. 12 - Polling, part II According to Pew Research, the...Ch. 12 - Prob. 47ECh. 12 - Blood The American Red Cross says that about 45%...Ch. 12 - Prob. 49ECh. 12 - Disjoint or independent? In Exercise 48, you...Ch. 12 - Prob. 51ECh. 12 - The train To get to work, a commuter must cross...Ch. 12 - Prob. 53ECh. 12 - Pepsi For a sales promotion, the manufacturer...Ch. 12 - 9/11? On September 11, 2002, the first anniversary...Ch. 12 - Prob. 56ECh. 12 - Prob. 57ECh. 12 - Prob. 58ECh. 12 - Health The probabilities that an adult American...Ch. 12 - Immigration The table shows the political...Ch. 12 - Prob. 61ECh. 12 - Birth order, take 2 Look again at the data about...Ch. 12 - Batteries A junk box in your room contains a dozen...Ch. 12 - Prob. 64ECh. 12 - Eligibility A university requires its biology...Ch. 12 - Benefits Fifty-six percent of all American workers...Ch. 12 - Unsafe food Early in 2010, Consumer Reports...Ch. 12 - Prob. 68ECh. 12 - Prob. 69ECh. 12 - Politics Given the table of probabilities from...Ch. 12 - Gender A poll conducted by Gallup classified...Ch. 12 - Cars A random survey of autos parked in student...Ch. 12 - Prob. 73ECh. 12 - Prob. 74ECh. 12 - Late luggage Remember Leah (Exercise 73)? Suppose...Ch. 12 - Prob. 76ECh. 12 - Prob. 77ECh. 12 - Prob. 78ECh. 12 - Prob. 79ECh. 12 - Prob. 80ECh. 12 - Drunks Police often set up sobriety...Ch. 12 - No-shows An airline offers discounted...Ch. 12 - Prob. 83ECh. 12 - Parts A company manufacturing electronic...Ch. 12 - HIV testing In July 2005, the journal Annals of...Ch. 12 - Polygraphs Lie detectors are controversial...
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- A college wants to estimate what students typically spend on textbooks. A report fromthe college bookstore observes that textbooks range in price from $22 to $186. Toobtain a 95% confidence level for a confidence interval estimate to plus or minus $10,how many students should the college survey? (We may estimate the populationstandard deviation as (range) ÷ 4.)arrow_forwardIn a study of how students give directions, forty volunteers were given the task ofexplaining to another person how to reach a destination. Researchers measured thefollowing five aspects of the subjects’ direction-giving behavior:• whether a map was available or if directions were given from memory without a map,• the gender of the direction-giver,• the distances given as part of the directions,• the number of times directions such as “north” or “left” were used,• the frequency of errors in directions. Identify each of the variables in this study, and whether each is quantitative orqualitative. For each quantitative variable, state whether it is discrete or continuous. Was this an observational study or an experimental study? Explain your answer.arrow_forwardexplain the difference between the confident interval and the confident level. provide an example to show how to correctly interpret a confidence interval.arrow_forward
- Sketch to scale the orbit of Earth about the sun. Graph Icarus’ orbit on the same set of axesWhile the sun is the center of Earth’s orbit, it is a focus of Icarus’ orbit. There aretwo points of intersection on the graph. Based on the graph, what is the approximate distance between the two points of intersection (in AU)?arrow_forwardThe diameters of ball bearings are distributed normally. The mean diameter is 67 millimeters and the standard deviation is 3 millimeters. Find the probability that the diameter of a selected bearing is greater than 63 millimeters. Round to four decimal places.arrow_forwardSuppose you like to keep a jar of change on your desk. Currently, the jar contains the following: 22 Pennies 27 Dimes 9 Nickels 30 Quarters What is the probability that you reach into the jar and randomly grab a penny and then, without replacement, a dime? Express as a fraction or a decimal number rounded to four decimal places.arrow_forward
- A box contains 14 large marbles and 10 small marbles. Each marble is either green or white. 9 of the large marbles are green, and 4 of the small marbles are white. If a marble is randomly selected from the box, what is the probability that it is small or white? Express as a fraction or a decimal number rounded to four decimal places.arrow_forwardCan I get help with this step please? At a shooting range, instructors can determine if a shooter is consistently missing the target because of the gun sight or because of the shooter's ability. If a gun's sight is off, the variance of the distances between the shots and the center of the shot pattern will be small (even if the shots are not in the center of the target). A student claims that it is the sight that is off, not his aim, and wants the instructor to confirm his claim. If a skilled shooter fires a gun at a target multiple times, the distances between the shots and the center of the shot pattern, measured in centimeters (cm), will have a variance of less than 0.33. After the student shoots 28 shots at the target, the instructor calculates that the distances between his shots and the center of the shot pattern, measured in cm, have a variance of 0.25. Does this evidence support the student's claim that the gun's sight is off? Use a 0.025 level of significance. Assume that the…arrow_forwardThe National Academy of Science reported that 38% of research in mathematics is published by US authors. The mathematics chairperson of a prestigious university wishes to test the claim that this percentage is no longer 38%. He has no indication of whether the percentage has increased or decreased since that time. He surveys a simple random sample of 279 recent articles published by reputable mathematics research journals and finds that 123 of these articles have US authors. Does this evidence support the mathematics chairperson's claim that the percentage is no longer 38 % ? Use a 0.02 level of significance. Compute the value of the test statistic. Round to two decimal places.arrow_forward
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