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Math Statistics Introduction to Statistics and Data Analysis

Explain whether a 90% confidence level or a 95% confidence level would result in a wider large sample confidence interval for p .

Explain whether a 90% confidence level or a 95% confidence level would result in a wider large sample confidence interval for p .

Solution Summary: The author explains that a 95% confidence interval is more deviated from the mean value of the characteristic being estimated.

Introduction to Statistics and Data Analysis

Introduction to Statistics and Data Analysis

5th Edition

ISBN: 9781305115347

Author: Roxy Peck; Chris Olsen; Jay L. Devore

Publisher: Brooks Cole

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Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

Chapter 9.2, Problem 10E

a.

To determine

Explain whether a 90% confidence level or a 95% confidence level would result in a wider large sample confidence interval for p.

b.

To determine

Explain whether a sample of size 100 or a sample of size 400 would result in a wider large sample confidence interval for p.

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Chapter 9.1, Problem 9E

Chapter 9.2, Problem 11E

Chapter 9 Solutions

Introduction to Statistics and Data Analysis

Ch. 9.1 - Three different statistics are being considered...Ch. 9.1 - a. Why is an unbiased statistic generally...Ch. 9.1 - Prob. 3E Ch. 9.1 - Prob. 4E Ch. 9.1 - Each person in a random sample of 20 students at a...Ch. 9.1 - Suppose that each of 935 smokers received a...Ch. 9.1 - Given below are the sodium contents (in mg) for...Ch. 9.1 - A random sample of n = 12 four-year-old red pine...Ch. 9.1 - A random sample of 10 houses heated with natural...Ch. 9.2 - Prob. 10E

Ch. 9.2 - The formula used to calculate a large-sample...Ch. 9.2 - Prob. 12E Ch. 9.2 - Discuss how each of the following factors affects...Ch. 9.2 - Prob. 14E Ch. 9.2 - Based on data from a survey of 1200 randomly...Ch. 9.2 - Prob. 16E Ch. 9.2 - If a hurricane was headed your way, would you...Ch. 9.2 - Prob. 18E Ch. 9.2 - Prob. 19E Ch. 9.2 - Prob. 20E Ch. 9.2 - Prob. 21E Ch. 9.2 - Prob. 22E Ch. 9.2 - Prob. 23E Ch. 9.2 - Prob. 24E Ch. 9.2 - Prob. 25E Ch. 9.2 - Prob. 26E Ch. 9.2 - Prob. 27E Ch. 9.2 - The Gallup Organization conducts an annual survey...Ch. 9.2 - The article Hospitals Dispute Medtronic Data on...Ch. 9.2 - Prob. 30E Ch. 9.2 - A discussion of digital ethics appears in the...Ch. 9.2 - In spite of the potential safety hazards, some...Ch. 9.2 - Prob. 33E Ch. 9.3 - Given a variable that has at distribution with the...Ch. 9.3 - The formula used to calculate a confidence...Ch. 9.3 - USA TODAY reported that the average amount of...Ch. 9.3 - Samples of two different models of cars were...Ch. 9.3 - Prob. 38E Ch. 9.3 - In a study of academic procrastination, the...Ch. 9.3 - Medical research has shown that repeated wrist...Ch. 9.3 - Prob. 41E Ch. 9.3 - Prob. 42E Ch. 9.3 - Suppose that a random sample of 50 bottles of a...Ch. 9.3 - Prob. 44E Ch. 9.3 - The article The Association Between Television...Ch. 9.3 - Prob. 46E Ch. 9.3 - Because of safety considerations, in May 2003 the...Ch. 9.3 - Example 9.3 gave the following airborne times (in...Ch. 9.3 - Prob. 49E Ch. 9.3 - Five students visiting the student health center...Ch. 9.3 - The Bureau of Alcohol, Tobacco, and Firearms...Ch. 9.3 - The formula described in this section for...Ch. 9.4 - The following quote is from the article Credit...Ch. 9.4 - Authors of the news release titled Major Gaps...Ch. 9.4 - The paper The Curious Promiscuity of Queen Honey...Ch. 9 - Prob. 56CR Ch. 9 - Prob. 57CR Ch. 9 - Prob. 58CR Ch. 9 - Prob. 59CR Ch. 9 - Prob. 60CR Ch. 9 - Prob. 61CR Ch. 9 - A manufacturer of small appliances purchases...Ch. 9 - Prob. 63CR Ch. 9 - A manufacturer of college textbooks is interested...Ch. 9 - Prob. 65CR Ch. 9 - The confidence intervals presented in this chapter...Ch. 9 - Prob. 67CR Ch. 9 - The interval from 2.33 to 1.75 captures an area of...Ch. 9 - Prob. 69CR

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