Chapter 1: Problem 26
The author rated the movie Star Wars: The Force Awakens with 5 stars on a scale of 5 stars.
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Chapter 1: Problem 26
The author rated the movie Star Wars: The Force Awakens with 5 stars on a scale of 5 stars.
These are the key concepts you need to understand to accurately answer the question.
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A researcher at the Sloan-Kettering Cancer Research Center was once criticized for falsifying data. Among his data were figures obtained from 6 groups of mice, with 20 individual mice in each group. The following values were given for the percentage of successes in each group: \(53 \%, 58 \%, 63 \%, 46 \%, 48 \%, 67 \%\). What's wrong with those values?
Assume that the population consists of all students currently in your statistics class. Describe how to obtain a sample of six students so that the result is a sample of the given type. a. Simple random sample b. Systematic sample c. Stratified sample d. Cluster sample
The Medical College Admissions Test (MCAT) is commonly used as part of the decision-making process for determining which students to accept into medical schools. To test the effectiveness of the Siena MCAT preparation course, 16 students take the MCAT test, then they complete the preparatory course, and then they retake the MCAT test, with the result that the average (mean) score for this group rises from 25 to 30 . There is a \(0.3 \%\) chance of getting those results by chance. Does the course appear to be effective?
If we analyze the listed body temperatures with suitable methods of statistics, we conclude that when the differences are found between the 8 AM body temperatures and the 12 AM body temperatures, there is a \(64 \%\) chance that the differences can be explained by random results obtained from populations that have the same 8 AM and 12 AM body temperatures. What should we conclude about the statistical significance of those differences?
In a survey conducted by TheKnot.com, 1165 engaged or married women were asked about the importance of a bended knee when making a marriage proposal. Among the 1165 respondents, \(48 \%\) said that the bended knee was essential. a. What is the exact value that is \(48 \%\) of 1165 survey respondents? b. Could the result from part (a) be the actual number of survey subjects who said that a bended knee is essential? Why or why not? c. What is the actual number of survey respondents saying that the bended knee is essential? d. Among the 1165 respondents, 93 said that a bended knee is corny and outdated. What percentage of respondents said that a bended knee is corny and outdated?
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