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1.Miller (2008) examined the energy drink consumption of college undergraduates and found that males use energy drinks significantly more often than females.  To further investigate this phenomenon, suppose a researcher selects a random sample of n = 36 male undergraduates and a sample of n = 25 females.  On average, the males reported consuming M = 2.45 drinks per month and females had an average of M = 1.28.  Assume that the overall level of consumption for college undergraduates averages μ = 1.85 energy drinks per month, and that the distribution of monthly consumption scores is approximately normal with a standard deviation of σ = 1.2.   A) The researcher wants to know if the sample of males consume significantly more energy drinks than the overall population average. What are the independent and dependent variables? Using symbols, state the hypotheses for the type of test you indicated in part b. (H0and H1) Sketch the appropriate distribution and locate the critical region for α = .01 for the type of test you indicated in part b. Test the researcher’s hypothesis using the appropriate statistic. What decision should be made about the null hypothesis? Be sure to use the correct language when answering this question. Compute Cohen’s dto measure the size of the effect. Is it a small, medium or large effect? Write a sentence describing the outcome of the hypothesis test and the measure of effect size as it would appear in a research report.

1.Miller (2008) examined the energy drink consumption of college undergraduates and found that males use energy drinks significantly more often than females.  To further investigate this phenomenon, suppose a researcher selects a random sample of n = 36 male undergraduates and a sample of n = 25 females.  On average, the males reported consuming M = 2.45 drinks per month and females had an average of M = 1.28.  Assume that the overall level of consumption for college undergraduates averages μ = 1.85 energy drinks per month, and that the distribution of monthly consumption scores is approximately normal with a standard deviation of σ = 1.2.   A) The researcher wants to know if the sample of males consume significantly more energy drinks than the overall population average. What are the independent and dependent variables? Using symbols, state the hypotheses for the type of test you indicated in part b. (H0and H1) Sketch the appropriate distribution and locate the critical region for α = .01 for the type of test you indicated in part b. Test the researcher’s hypothesis using the appropriate statistic. What decision should be made about the null hypothesis? Be sure to use the correct language when answering this question. Compute Cohen’s dto measure the size of the effect. Is it a small, medium or large effect? Write a sentence describing the outcome of the hypothesis test and the measure of effect size as it would appear in a research report.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
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1.Miller (2008) examined the energy drink consumption of college undergraduates and found that males use energy drinks significantly more often than females.  To further investigate this phenomenon, suppose a researcher selects a random sample of n = 36 male undergraduates and a sample of n = 25 females.  On average, the males reported consuming M = 2.45 drinks per month and females had an average of M = 1.28.  Assume that the overall level of consumption for college undergraduates averages μ = 1.85 energy drinks per month, and that the distribution of monthly consumption scores is approximately normal with a standard deviation of σ = 1.2.

 

A) The researcher wants to know if the sample of males consume significantly more energy drinks than the overall population average.

  1. What are the independent and dependent variables?
  2. Using symbols, state the hypotheses for the type of test you indicated in part b. (H0and H1)
  3. Sketch the appropriate distribution and locate the critical region for α = .01 for the type of test you indicated in part b.
  4. Test the researcher’s hypothesis using the appropriate statistic.
  5. What decision should be made about the null hypothesis? Be sure to use the correct language when answering this question.
  6. Compute Cohen’s dto measure the size of the effect. Is it a small, medium or large effect?
  7. Write a sentence describing the outcome of the hypothesis test and the measure of effect size as it would appear in a research report.
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