Explanation Given info: The bank introduces the benefits to people for the promotion of the bank. The test hypotheses is Null hypothesis: H 0 : p = 0.30 _ That is, the new method is not effective. Alternative hypothesis: H A : p > 0

Intro Stats, Books a la Carte Edition (5th Edition)

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ISBN: 9780134210285

Author: Richard D. De Veaux, Paul Velleman, David E. Bock

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Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative p…

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Chapter 15.6, Problem 8JC

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Chapter 15.6, Problem 7JC

Chapter 15, Problem 1E

Chapter 15 Solutions

Intro Stats, Books a la Carte Edition (5th Edition)

Ch. 15.2 - A research team wants to know if aspirin helps to...Ch. 15.2 - An allergy drug has been tested and found to give...Ch. 15.2 - The new drug is tested and the P-value is 0.0001....Ch. 15.4 - The research team that wants to know if aspirin...Ch. 15.4 - Prob. 5JC Ch. 15.6 - Prob. 6JC Ch. 15.6 - Prob. 7JC Ch. 15.6 - Prob. 8JC Ch. 15 - Better than aspirin? A very large study showed...Ch. 15 - Psychic A friend of yours claims to be psychic....

Ch. 15 - Parameters and hypotheses For each of the...Ch. 15 - Hypotheses and parameters As in Exercise 3, for...Ch. 15 - SECTION 15.2 5. Better than aspirin again?...Ch. 15 - GRE performance A test preparation company claims...Ch. 15 - SECTION 15.3 7. Hispanic origin According to the...Ch. 15 - Empty houses According to the 2010 Census, 11.4%...Ch. 15 - Prob. 9E Ch. 15 - Marriage In 1960, census results indicated that...Ch. 15 - Prob. 11E Ch. 15 - Golf balls The United States Golf Association...Ch. 15 - Prob. 13E Ch. 15 - Prob. 14E Ch. 15 - CHAPTER EXERCISES 15. Hypotheses Write the null...Ch. 15 - More hypotheses Write the null and alternative...Ch. 15 - Negatives After the political ad campaign...Ch. 15 - Dice The seller of a loaded die claims that it...Ch. 15 - Prob. 19E Ch. 15 - Cars A survey investigating whether the proportion...Ch. 15 - Prob. 21E Ch. 15 - Prob. 22E Ch. 15 - Prob. 23E Ch. 15 - Prob. 24E Ch. 15 - Dowsing In a rural area, only about 30% of the...Ch. 15 - Abnormalities In the 1980s, it was generally...Ch. 15 - Prob. 27E Ch. 15 - Educated mothers The National Center for Education...Ch. 15 - Contributions, please II We learned in Chapter 13,...Ch. 15 - Prob. 30E Ch. 15 - Prob. 31E Ch. 15 - Scratch and dent An appliance manufacturer...Ch. 15 - Prob. 33E Ch. 15 - Football 2016 During the first 15 weeks of the...Ch. 15 - WebZine A magazine is considering the launch of an...Ch. 15 - Seeds A garden center wants to store leftover...Ch. 15 - Prob. 37E Ch. 15 - Prob. 38E Ch. 15 - Prob. 39E Ch. 15 - Acid rain A study of the effects of acid rain on...Ch. 15 - Prob. 41E Ch. 15 - TV ads A start-up company is about to market a new...Ch. 15 - Prob. 43E Ch. 15 - Prob. 44E Ch. 15 - Normal temperature again From the measurements of...Ch. 15 - Hot dogs again The nutrition lab in Chapter 14,...Ch. 15 - Prob. 47E Ch. 15 - Computer lab fees again The technology committee...Ch. 15 - More Ruffles Recall from Chapter 14, Exercise 55...Ch. 15 - More Doritos We saw in Chapter 14, Exercise 56...Ch. 15 - Prob. 51E Ch. 15 - Prob. 52E Ch. 15 - Prob. 53E Ch. 15 - Prob. 54E Ch. 15 - Maze Here are the data from the researcher...Ch. 15 - Facebook friends According to...Ch. 15 - Maze revisited A student resampled the Maze times...Ch. 15 - Prob. 58E Ch. 15 - Prob. 59E Ch. 15 - Prob. 60E

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Cholesterol Cholesterol in human blood is necessary, but too much can lead to health problems. There are three main types of cholesterol: HDL (high-density lipoproteins), LDL (low-density lipoproteins), and VLDL (very low-density lipoproteins). HDL is considered “good” cholesterol; LDL and VLDL are considered “bad” cholesterol. A standard fasting cholesterol blood test measures total cholesterol, HDL cholesterol, and triglycerides. These numbers are used to estimate LDL and VLDL, which are difficult to measure directly. Your doctor recommends that your combined LDL/VLDL cholesterol level be less than 130 milligrams per deciliter, your HDL cholesterol level be at least 60 milligrams per deciliter, and your total cholesterol level be no more than 200 milligrams per deciliter. (a) Write a system of linear inequalities for the recommended cholesterol levels. Let x represent the HDL cholesterol level, and let y represent the combined LDL VLDL cholesterol level. (b) Graph the system of inequalities from part (a). Label any vertices of the solution region. (c) Is the following set of cholesterol levels within the recommendations? Explain. LDL/VLDL: 120 milligrams per deciliter HDL: 90 milligrams per deciliter Total: 210 milligrams per deciliter (d) Give an example of cholesterol levels in which the LDL/VLDL cholesterol level is too high but the HDL cholesterol level is acceptable. (e) Another recommendation is that the ratio of total cholesterol to HDL cholesterol be less than 4 (that is, less than 4 to 1). Identify a point in the solution region from part (b) that meets this recommendation, and explain why it meets the recommendation.

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Sampling Methods and Bias with Surveys: Crash Course Statistics #10; Author: CrashCourse;https://www.youtube.com/watch?v=Rf-fIpB4D50;License: Standard YouTube License, CC-BY

Statistics: Sampling Methods; Author: Mathispower4u;https://www.youtube.com/watch?v=s6ApdTvgvOs;License: Standard YouTube License, CC-BY

Check whether the statisticians result is agreed or not.

Solution Summary: The author concludes that the statistician's result is agreed. The bank introduces the benefits to people for the promotion of the bank.

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Check whether the statisticians result is agreed or not.

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Chapter 15 Solutions