Statistics: The Art and Science of Learning from Data (4th Edition)

4th Edition

ISBN: 9780321997838

Author: Alan Agresti, Christine A. Franklin, Bernhard Klingenberg

Publisher: PEARSON

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Textbook Question

Chapter 9.1, Problem 7PB

Proper hypotheses? Explain what is wrong with each set of null and alternative hypotheses shown. Then, correct each to form a proper set of hypotheses.

a. H₀: p ^ = 0.50, H_a: p ^ > 0.50
b. H₀: µ = 100, H_a: µ = 200
c. H₀: p = 0.30, H_a: p > 0.10

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Chapter 9.1, Problem 6PB

Chapter 9.1, Problem 8PB

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Chapter 9 Solutions

Statistics: The Art and Science of Learning from Data (4th Edition)

Ch. 9.1 - H0 or Ha? For parts a and b, is the statement a...Ch. 9.1 - H0 or Ha? For each of the following, is the...Ch. 9.1 - Burden of proof For a new pesticide, should the...Ch. 9.1 - Financial aid The average financial aid package...Ch. 9.1 - Low-carbohydrate diet A study plans to have a...Ch. 9.1 - Prob. 6PB Ch. 9.1 - Proper hypotheses? Explain what is wrong with each...Ch. 9.1 - Prob. 8PB Ch. 9.1 - P-value Indicate whether each of the following...Ch. 9.2 - Psychic A person who claims to be psychic says he...

Ch. 9.2 - Prob. 11PB Ch. 9.2 - Get P-value from z For a test of H0: p = 0.50, the...Ch. 9.2 - Get more P-values from z Refer to the previous...Ch. 9.2 - Find test statistic and P-value For a test of H0:...Ch. 9.2 - Dogs and cancer A recent study4 considered whether...Ch. 9.2 - Religion important in your life? Americans ages 18...Ch. 9.2 - Prob. 17PB Ch. 9.2 - Prob. 18PB Ch. 9.2 - Testing a headache remedy Studies that compare...Ch. 9.2 - Gender bias in selecting managers For a large...Ch. 9.2 - Gender discrimination Refer to the 95% confidence...Ch. 9.2 - Garlic to repel ticks A study (J. Amer. Med....Ch. 9.2 - Exit-poll predictions According to an exit poll of...Ch. 9.2 - Which cola? The 49 students in a class at the...Ch. 9.2 - How to sell a burger A fast-food chain wants to...Ch. 9.2 - A binomial headache A null hypothesis states that...Ch. 9.2 - P-value for small samples Example 4, on whether...Ch. 9.3 - Which t has P-value = 0.05? A t test for a mean...Ch. 9.3 - Practice mechanics of a t test A study has a...Ch. 9.3 - Prob. 30PB Ch. 9.3 - Low carbohydrate diet In a recent study,8 272...Ch. 9.3 - Prob. 32PB Ch. 9.3 - Facebook friends Many students brag that they have...Ch. 9.3 - Lake pollution An industrial plant claims to...Ch. 9.3 - Weight change for controls A disadvantage of the...Ch. 9.3 - Crossover study A crossover study of 13 children...Ch. 9.3 - Too little or too much wine? Wine-pouring vending...Ch. 9.3 - Prob. 38PB Ch. 9.3 - Assumptions important? Refer to the previous...Ch. 9.3 - Anorexia in teenage girls Example 8 described a...Ch. 9.3 - Sensitivity study Ideally, results of a...Ch. 9.3 - Prob. 42PB Ch. 9.4 - Dr. Dog In the experiment in Example 4, we got a...Ch. 9.4 - Error probability A significance test about a...Ch. 9.4 - Fracking errors Example 6, in testing H0: p = 0.5...Ch. 9.4 - Prob. 46PB Ch. 9.4 - Anorexia decision Refer to the previous exercise....Ch. 9.4 - Prob. 48PB Ch. 9.4 - Errors in medicine Consider the test of H0: The...Ch. 9.4 - Prob. 50PB Ch. 9.4 - Detecting prostate cancer Refer to the previous...Ch. 9.4 - Prob. 52PB Ch. 9.5 - Misleading summaries? Two researchers conduct...Ch. 9.5 - Practical significance A study considers whether...Ch. 9.5 - Prob. 55PB Ch. 9.5 - Fishing for significance A marketing study...Ch. 9.5 - Prob. 57PB Ch. 9.5 - Prob. 58PB Ch. 9.5 - Interpret medical research studies a. An...Ch. 9.6 - Find P(Type II error) A study is designed to test...Ch. 9.6 - Gender bias in selecting managers Exercise 9.20...Ch. 9.6 - Prob. 62PB Ch. 9.6 - P(Type II error) large when p close to H0 For...Ch. 9.6 - Prob. 64PB Ch. 9.6 - Power for infertility trial Consider Example 13...Ch. 9.6 - Exploring Type II errors Refer to the web app from...Ch. 9 - H0 or Ha? For each of the following hypotheses,...Ch. 9 - Write H0 and Ha For each of the following...Ch. 9 - Prob. 69CP Ch. 9 - Free-throw accuracy Consider all cases in which a...Ch. 9 - Brown or Whitman? Californias governor election in...Ch. 9 - Prob. 72CP Ch. 9 - Prob. 73CP Ch. 9 - Prob. 74CP Ch. 9 - Prob. 75CP Ch. 9 - Start a hockey team A fraternity at a university...Ch. 9 - Prob. 77CP Ch. 9 - Prob. 78CP Ch. 9 - Prob. 79CP Ch. 9 - Prob. 80CP Ch. 9 - Prob. 81CP Ch. 9 - Two ideal children? Is the ideal number of...Ch. 9 - Prob. 83CP Ch. 9 - Prob. 84CP Ch. 9 - Blood pressure When Vincenzo Baranellos blood...Ch. 9 - Increasing blood pressure In the previous...Ch. 9 - Tennis balls in control? When it is operating...Ch. 9 - Prob. 88CP Ch. 9 - Prob. 89CP Ch. 9 - CI and test Refer to the previous exercise. a. For...Ch. 9 - Prob. 91CP Ch. 9 - Religious beliefs statistically significant? A...Ch. 9 - Prob. 93CP Ch. 9 - Prob. 94CP Ch. 9 - Prob. 95CP Ch. 9 - Prob. 96CP Ch. 9 - Prob. 98CP Ch. 9 - Baseball home team advantage In Major League...Ch. 9 - Prob. 100CP Ch. 9 - Prob. 101CP Ch. 9 - Prob. 102CP Ch. 9 - Prob. 103CP Ch. 9 - Prob. 104CP Ch. 9 - Prob. 105CP Ch. 9 - Prob. 106CP Ch. 9 - Prob. 107CP Ch. 9 - Prob. 108CP Ch. 9 - Significance Explain the difference between...Ch. 9 - More doctors recommend An advertisement by Company...Ch. 9 - Prob. 111CP Ch. 9 - Bad P-value interpretations A random sample of...Ch. 9 - Prob. 113CP Ch. 9 - Prob. 114CP Ch. 9 - Prob. 115CP Ch. 9 - Prob. 116CP Ch. 9 - Prob. 117CP Ch. 9 - Prob. 118CP Ch. 9 - Prob. 119CP Ch. 9 - Prob. 120CP Ch. 9 - Prob. 121CP Ch. 9 - True or false A 95% confidence interval for =...Ch. 9 - Prob. 123CP Ch. 9 - Prob. 124CP Ch. 9 - Prob. 125CP Ch. 9 - Prob. 126CP Ch. 9 - Prob. 127CP Ch. 9 - Prob. 128CP

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Proper hypotheses? Explain what is wrong with each set of null and alternative hypotheses shown. Then, correct each to form a proper set of hypotheses. a. H 0 : p ^ = 0.50, H a : p ^ > 0.50 b. H 0 : µ = 100, H a : µ = 200 c. H 0 : p = 0.30, H a : p > 0.10

Solution Summary: The author explains that the alternative hypothesis does not represent the sample statistic which is wrong.

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Chapter 9 Solutions

Proper hypotheses? Explain what is wrong with each set of null and alternative hypotheses shown. Then, correct each to form a proper set of hypotheses. a. H 0 : p ^ = 0.50, H a : p ^ &gt; 0.50 b. H 0 : µ = 100, H a : µ = 200 c. H 0 : p = 0.30, H a : p &gt; 0.10

Solution Summary: The author explains that the alternative hypothesis does not represent the sample statistic which is wrong.

Videos

Want to see the full answer?

Chapter 9 Solutions

Proper hypotheses? Explain what is wrong with each set of null and alternative hypotheses shown. Then, correct each to form a proper set of hypotheses. a. H 0 : p ^ = 0.50, H a : p ^ > 0.50 b. H 0 : µ = 100, H a : µ = 200 c. H 0 : p = 0.30, H a : p > 0.10