Essentials of Statistics for The Behavioral Sciences (MindTap Course List)
9th Edition
ISBN: 9781337098120
Author: Frederick J Gravetter, Larry B. Wallnau, Lori-Ann B. Forzano
Publisher: Cengage Learning
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Textbook Question
Chapter 7.5, Problem 1LC
A sample is obtained from a population with μ = 100 and σ = 20. Which of the following samples would produce the z-score closest to zero?
- a. A sample of n = 25 scores with M = 102
- b. A sample of n = 100 scores with M = 102
- c. A sample of n = 25 scores with M = 104
- d. A sample of n = 100 scores with M = 104
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A sample of n = 25 scores has a mean of M = 68. Find the z-score for the sample:
If it was obtained from a population with u = 60 and o = 10, z = ?
If it was obtained from a population with u = 60 and o = 20, z = ?
If it was obtained from a population with u = 60 and o = 40, z = ?
A sample of n = 25 scores has a mean of M = 68. Find the z-score for this sample:
a) if it was obtained from a population with u =60 and sigma = 10
b) if it was obtained from a population with u =60 and sigma = 20
c) if it was obtained from a population with u = 60 and sigma= 40
A sample is obtained from a population with m = 200 and s = 40. Which of the following samples would produce the most extreme z-score?
A sample of n = 25 scores with M = 202
A sample of n = 100 scores with M = 202
A sample of n = 25 scores with M = 204
A sample of n = 100 scores with M = 204
Chapter 7 Solutions
Essentials of Statistics for The Behavioral Sciences (MindTap Course List)
Ch. 7.1 - If all the possible random samples, each with n =...Ch. 7.1 - All the possible random samples of size n = 2 are...Ch. 7.1 - If all the possible random samples of size n = 25...Ch. 7.2 - If random samples, each with n = 4 scores, are...Ch. 7.2 - If random samples each with n = 9 scores, are...Ch. 7.2 - A sample of n = 4 scores has a standard error of...Ch. 7.3 - A sample of n = 16 scores is obtained from a...Ch. 7.3 - A random sample of n = 4 scores is obtained from a...Ch. 7.3 - A random sample of n = 4 scores is obtained from a...Ch. 7.4 - Which of the following would cause the standard...
Ch. 7.4 - A sample obtained from a population with = 10 has...Ch. 7.4 - Prob. 3LCCh. 7.5 - A sample is obtained from a population with = 100...Ch. 7.5 - For a normal population with = 80 and = 20,...Ch. 7.5 - For a sample selected from a normal population...Ch. 7 - Briefly define each of the following: a....Ch. 7 - A sample is selected from a population with a mean...Ch. 7 - Describe the distribution of sample means (shape,...Ch. 7 - Under what circumstances is the distribution of...Ch. 7 - A random sample is selected from a population with...Ch. 7 - For a sample of n = 16 scores, what is the value...Ch. 7 - For a population with a mean of = 40 and a...Ch. 7 - A sample of n - 25 scores has a mean of M - 68...Ch. 7 - A population forms a normal distribution with a...Ch. 7 - Scores on a standardized reading test for...Ch. 7 - Scores from a questionnaire measuring social...Ch. 7 - A normal distribution has a mean of = 54 and...Ch. 7 - A population has a mean of = 30 and a standard...Ch. 7 - For random samples of size n = 16 selected from a...Ch. 7 - The distribution exam grades for an introductory...Ch. 7 - By definition, jumbo shrimp are those that require...Ch. 7 - For a population with a mean of = 72 and a...Ch. 7 - For a population with = 16, how large a sample is...Ch. 7 - If the population standard deviation is = 10, how...Ch. 7 - Junes, Thomas, and Piper (2003) conducted a study...Ch. 7 - A normal distribution has a mean of = 60 and a...Ch. 7 - A random sample is obtained from a normal...Ch. 7 - A sample of n= 36 scores is selected from a normal...
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