Testing Hypothesis for variances
Not what you're looking for?
A sample of 25 concession stand purchases, at the October 22 matinée "Bride of Chucky," showed a mean purchase of $5.29 with a standard deviation of $3.02. For the October 26 evening showing of the same movie, for a sample of 25 purchases the mean was $5.12 with a standard deviation of $2.14. The means appear to be very close, but not the variances. At alpha = .05, is there a difference in variances? Show all steps clearly, including an illustration of the decision rule.
Purchase this Solution
Solution Summary
Solution describes the steps for testing whether there is a significant difference in variances or not.
Solution Preview
Please refer attached file for complete details as work done with the help of equatin writer may not print here.
Solution:
We are given
Sample size on October 22=n1=25
Std deviation =s1=3.02
Sample size on October 26=n2=25
Std ...
Education
- BEng (Hons) , Birla Institute of Technology and Science, India
- MSc (Hons) , Birla Institute of Technology and Science, India
Recent Feedback
- "Thank you"
- "Really great step by step solution"
- "I had tried another service before Brain Mass and they pale in comparison. This was perfect."
- "Thanks Again! This is totally a great service!"
- "Thank you so much for your help!"
Purchase this Solution
Free BrainMass Quizzes
Know Your Statistical Concepts
Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.
Measures of Central Tendency
Tests knowledge of the three main measures of central tendency, including some simple calculation questions.
Terms and Definitions for Statistics
This quiz covers basic terms and definitions of statistics.
Measures of Central Tendency
This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.