2nd Edition

ISBN: 9781259570643

Author: Navidi

Publisher: MCG

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A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

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Textbook Question

Chapter 6.3, Problem 12E

In Exercises 9–14, n is the sample size, p is the population proportion, and p ^ is the sample proportion. If appropriate, use the Central Limit Theorem to find the indicated probability.

12. n = 103, p = 0.24; P(0.20 < p ^ < 0.23)

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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Chapter 6.3, Problem 11E

Chapter 6.3, Problem 13E

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Chapter 6 Solutions

Essential Statistics

Ch. 6.1 - Prob. 1CYU Ch. 6.1 - Prob. 2CYU Ch. 6.1 - Prob. 3CYU Ch. 6.1 - Prob. 4CYU Ch. 6.1 - Prob. 5CYU Ch. 6.1 - Prob. 6CYU Ch. 6.1 - Prob. 7CYU Ch. 6.1 - Prob. 8CYU Ch. 6.1 - Prob. 9CYU Ch. 6.1 - Prob. 10CYU

Ch. 6.1 - Prob. 11E Ch. 6.1 - In Exercises 11–16, fill in each blank with the...Ch. 6.1 - In Exercises 11–16, fill in each blank with the...Ch. 6.1 - In Exercises 11–16, fill in each blank with the...Ch. 6.1 - In Exercises 11–16, fill in each blank with the...Ch. 6.1 - In Exercises 11–16, fill in each blank with the...Ch. 6.1 - In Exercises 17–26, determine whether the...Ch. 6.1 - In Exercises 17–26, determine whether the...Ch. 6.1 - If a normal population has a mean of and a...Ch. 6.1 - In Exercises 17–26, determine whether the...Ch. 6.1 - Determine Exercises 1726, whether the statement is...Ch. 6.1 - Determine Exercises 1726, whether the statement is...Ch. 6.1 - Prob. 23E Ch. 6.1 - In Exercises 17–26, determine whether the...Ch. 6.1 - Prob. 25E Ch. 6.1 - Prob. 26E Ch. 6.1 - 27. The following figure is a probability density...Ch. 6.1 - 28. The following figure is a probability density...Ch. 6.1 - Prob. 29E Ch. 6.1 - Prob. 30E Ch. 6.1 - Prob. 31E Ch. 6.1 - 32. Find the area under the standard normal curve...Ch. 6.1 - Prob. 33E Ch. 6.1 - Prob. 34E Ch. 6.1 - Prob. 35E Ch. 6.1 - 36. Find the area under the standard normal curve...Ch. 6.1 - Find the area under the standard normal curve that...Ch. 6.1 - Find the area under the standard normal curve that...Ch. 6.1 - Prob. 39E Ch. 6.1 - 40. Find the z-score for which the area to its...Ch. 6.1 - Prob. 41E Ch. 6.1 - 42. Find the z-score for which the area to its...Ch. 6.1 - Prob. 43E Ch. 6.1 - 44. Find the z-scores that bound the middle 70% of...Ch. 6.1 - Prob. 45E Ch. 6.1 - Prob. 46E Ch. 6.1 - Prob. 47E Ch. 6.1 - Prob. 48E Ch. 6.1 - Prob. 49E Ch. 6.1 - Prob. 50E Ch. 6.1 - Prob. 51E Ch. 6.1 - Prob. 52E Ch. 6.1 - Prob. 53E Ch. 6.1 - Prob. 54E Ch. 6.1 - Prob. 55E Ch. 6.1 - Prob. 56E Ch. 6.1 - Prob. 57E Ch. 6.1 - Prob. 58E Ch. 6.1 - 59. Check your blood pressure: The Centers for...Ch. 6.1 - Prob. 60E Ch. 6.1 - Prob. 61E Ch. 6.1 - Prob. 62E Ch. 6.1 - Prob. 63E Ch. 6.1 - 64. Big chickens: A report on thepoultrysite.com...Ch. 6.1 - Prob. 65E Ch. 6.1 - 66. Electric bills: According to the U.S. Energy...Ch. 6.1 - Prob. 67E Ch. 6.1 - Prob. 68E Ch. 6.1 - 69. Tire lifetimes: The lifetime of a certain type...Ch. 6.1 - 70. Tree heights: Cherry trees in a certain...Ch. 6.1 - 71. Tire lifetimes: The lifetime of a certain type...Ch. 6.1 - Prob. 72E Ch. 6.1 - Prob. 73E Ch. 6.1 - Prob. 74E Ch. 6.1 - Prob. 75E Ch. 6.1 - 76. How much do you study? A survey among freshmen...Ch. 6.1 - Prob. 77E Ch. 6.1 - Prob. 78E Ch. 6.1 - Prob. 79E Ch. 6.1 - Prob. 80E Ch. 6.1 - Prob. 81E Ch. 6.1 - Prob. 82E Ch. 6.1 - Prob. 83E Ch. 6.1 - Prob. 84E Ch. 6.2 - A population has mean μ = 6.9 and standard...Ch. 6.2 - A population has mean μ = 17 and standard...Ch. 6.2 - A population has mean μ = 10 and standard...Ch. 6.2 - A population has mean μ = 47.5 and standard...Ch. 6.2 - Prob. 5E Ch. 6.2 - In Exercises 5 and 6, fill in each blank with the...Ch. 6.2 - Prob. 7E Ch. 6.2 - Prob. 8E Ch. 6.2 - Prob. 9E Ch. 6.2 - 10. A sample of size 126 will be drawn from a...Ch. 6.2 - Prob. 11E Ch. 6.2 - 12. A sample of size 284 will be drawn from a...Ch. 6.2 - Prob. 13E Ch. 6.2 - Prob. 14E Ch. 6.2 - A sample of size 20 will be drawn from a...Ch. 6.2 - Prob. 16E Ch. 6.2 - Prob. 17E Ch. 6.2 - Prob. 18E Ch. 6.2 - Prob. 19E Ch. 6.2 - Prob. 20E Ch. 6.2 - Prob. 21E Ch. 6.2 - 22. Watch your cholesterol: The National Health...Ch. 6.2 - Prob. 23E Ch. 6.2 - Prob. 24E Ch. 6.2 - 25. Taxes: The Internal Revenue Service reports...Ch. 6.2 - Prob. 26E Ch. 6.2 - Prob. 27E Ch. 6.2 - 28. Elevator ride: Engineers are designing a large...Ch. 6.2 - Annual income: The mean annual income for people...Ch. 6.2 - Prob. 30E Ch. 6.2 - Eat your cereal: A cereal manufacturer claims that...Ch. 6.2 - Battery life: A battery manufacturer claims that...Ch. 6.2 - Prob. 33E Ch. 6.3 - Find μ p ^ and σ p ^ if n = 20 and p = 0.82.Ch. 6.3 - Prob. 2CYU Ch. 6.3 - Prob. 3CYU Ch. 6.3 - For a certain type of computer chip, the...Ch. 6.3 - Prob. 5E Ch. 6.3 - In Exercises 5 and 6, fill in each blank with the...Ch. 6.3 - Prob. 7E Ch. 6.3 - Prob. 8E Ch. 6.3 - Prob. 9E Ch. 6.3 - In Exercises 9–14, n is the sample size, p is the...Ch. 6.3 - Prob. 11E Ch. 6.3 - In Exercises 9–14, n is the sample size, p is the...Ch. 6.3 - Prob. 13E Ch. 6.3 - Prob. 14E Ch. 6.3 - Coffee: The National Coffee Association reported...Ch. 6.3 - Smartphones: A Pew Research report indicated that...Ch. 6.3 - Student loans: The Institute for College Access...Ch. 6.3 - High school graduates: The National Center for...Ch. 6.3 - Prob. 19E Ch. 6.3 - Working two jobs: The Bureau of Labor Statistics...Ch. 6.3 - Future scientists: Education professionals refer...Ch. 6.3 - Blood pressure: High blood pressure has been...Ch. 6.3 - Prob. 23E Ch. 6.3 - Prob. 24E Ch. 6.3 - Kidney transplants: The Health Resources and...Ch. 6.3 - How’s your new car? The General Social Survey...Ch. 6.3 - Flawless tiles: A new process has been designed to...Ch. 6.4 - Prob. 1CYU Ch. 6.4 - Prob. 2CYU Ch. 6.4 - Prob. 3CYU Ch. 6.4 - Prob. 4CYU Ch. 6.4 - Prob. 5E Ch. 6.4 - Prob. 6E Ch. 6.4 - Prob. 7E Ch. 6.4 - Prob. 8E Ch. 6.4 - In Exercises 9–14, n is the sample size, p is the...Ch. 6.4 - Prob. 10E Ch. 6.4 - In Exercises 9–14, n is the sample size, p is the...Ch. 6.4 - Prob. 12E Ch. 6.4 - Prob. 13E Ch. 6.4 - Prob. 14E Ch. 6.4 - Prob. 15E Ch. 6.4 - Prob. 16E Ch. 6.4 - Prob. 17E Ch. 6.4 - Stress at work: In a poll conducted by the General...Ch. 6.4 - What’s your opinion? A pollster will interview a...Ch. 6.4 - Prob. 20E Ch. 6.4 - The car is in the shop: Among automobiles of a...Ch. 6.4 - Prob. 22E Ch. 6.4 - Getting bumped: Airlines often sell more tickets...Ch. 6.4 - Prob. 24E Ch. 6.4 - Probability of a single number: A fair coin is...Ch. 6.5 - Prob. 1CYU Ch. 6.5 - Prob. 2CYU Ch. 6.5 - Prob. 3CYU Ch. 6.5 - Prob. 4CYU Ch. 6.5 - Prob. 5CYU Ch. 6.5 - Prob. 6CYU Ch. 6.5 - Prob. 7E Ch. 6.5 - Prob. 8E Ch. 6.5 - Prob. 9E Ch. 6.5 - Prob. 10E Ch. 6.5 - Prob. 11E Ch. 6.5 - Prob. 12E Ch. 6.5 - Prob. 13E Ch. 6.5 - Prob. 14E Ch. 6.5 - Prob. 15E Ch. 6.5 - Prob. 16E Ch. 6.5 - Prob. 17E Ch. 6.5 - Prob. 18E Ch. 6.5 - Prob. 19E Ch. 6.5 - Prob. 20E Ch. 6.5 - Prob. 21E Ch. 6.5 - Prob. 22E Ch. 6.5 - Defective items: The number of defective items...Ch. 6.5 - Prob. 24E Ch. 6.5 - Prob. 25E Ch. 6.5 - Prob. 26E Ch. 6.5 - Prob. 27E Ch. 6.5 - Prob. 28E Ch. 6.5 - Prob. 29E Ch. 6.5 - Prob. 30E Ch. 6.5 - Prob. 31E Ch. 6.5 - Prob. 32E Ch. 6 - Following is a probability density curse for a...Ch. 6 - Prob. 2CQ Ch. 6 - Prob. 3CQ Ch. 6 - Find the z-scores that bound the middle 80% of the...Ch. 6 - Find z0.15.Ch. 6 - Prob. 6CQ Ch. 6 - Prob. 7CQ Ch. 6 - Prob. 8CQ Ch. 6 - Prob. 9CQ Ch. 6 - Prob. 10CQ Ch. 6 - Prob. 11CQ Ch. 6 - Prob. 12CQ Ch. 6 - Prob. 13CQ Ch. 6 - Prob. 14CQ Ch. 6 - Prob. 15CQ Ch. 6 - Prob. 1RE Ch. 6 - Prob. 2RE Ch. 6 - Your battery is dead: The lifetimes of a certain...Ch. 6 - Take your medicine: Medication used to treat a...Ch. 6 - Lightbulbs: The lifetime of lightbulbs has a mean...Ch. 6 - More lightbulbs: Someone claims to have developed...Ch. 6 - Prob. 7RE Ch. 6 - Safe delivery: A certain delivery truck can safely...Ch. 6 - Elementary school: In a certain elementary school,...Ch. 6 - Face book: Eighty percent of the students at a...Ch. 6 - It’s all politics: A politician in a close...Ch. 6 - Side effects: A new medical procedure produces...Ch. 6 - Prob. 13RE Ch. 6 - Prob. 14RE Ch. 6 - Prob. 15RE Ch. 6 - Prob. 1WAI Ch. 6 - Prob. 2WAI Ch. 6 - Prob. 3WAI Ch. 6 - Prob. 4WAI Ch. 6 - Prob. 5WAI Ch. 6 - Prob. 6WAI Ch. 6 - Prob. 7WAI Ch. 6 - Prob. 1CS Ch. 6 - Prob. 2CS Ch. 6 - Prob. 3CS Ch. 6 - Prob. 4CS Ch. 6 - Prob. 5CS Ch. 6 - Prob. 6CS Ch. 6 - Prob. 7CS Ch. 6 - Prob. 8CS

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In Exercises 9–14, n is the sample size , p is the population proportion, and p ^ is the sample proportion. If appropriate, use the Central Limit Theorem to find the indicated probability . 12. n = 103, p = 0 . 24; P (0 . 20 < p ^ < 0 . 23)

Solution Summary: The author calculates the indicated probability P(0.20stackrelp0.23) using the Central Limit Theorem.

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Chapter 6 Solutions

In Exercises 9–14, n is the sample size , p is the population proportion, and p ^ is the sample proportion. If appropriate, use the Central Limit Theorem to find the indicated probability . 12. n = 103, p = 0 . 24; P (0 . 20 &lt; p ^ &lt; 0 . 23)

Solution Summary: The author calculates the indicated probability P(0.20stackrelp0.23) using the Central Limit Theorem.

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Chapter 6 Solutions

In Exercises 9–14, n is the sample size , p is the population proportion, and p ^ is the sample proportion. If appropriate, use the Central Limit Theorem to find the indicated probability . 12. n = 103, p = 0 . 24; P (0 . 20 < p ^ < 0 . 23)