Testing Claims About Variation. In Exercises 5-16, test the given claim. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, or critical value(s), then state the conclusion about the null hypothesis, as well as the final conclusion that addresses the original claim. Assume that a simple random sample is selected from a
12. Spoken Words Couples were recruited for a study of how many words people speak in a day. A random sample of 56 males resulted in a mean of 16,576 words and a standard deviation of 7871 words. Use a 0.01 significance level to test the claim that males have a standard deviation that is greater than the standard deviation of7460 words for females (based on Data Set 24 “Word Counts”).
Learn your wayIncludes step-by-step video
Chapter 8 Solutions
Elementary Statistics (13th Edition)
Additional Math Textbook Solutions
Intro Stats
Elementary Statistics
Basic Business Statistics, Student Value Edition (13th Edition)
Statistics for Psychology
Introductory Statistics (10th Edition)
- Functions and Change: A Modeling Approach to Coll...AlgebraISBN:9781337111348Author:Bruce Crauder, Benny Evans, Alan NoellPublisher:Cengage Learning