Null Hypothesis and Confidence Interval
Not what you're looking for?
Please see the attachment for the fully formatted solution.
The Osborne manufacture makes a soft drink dispensing machine that allows customers to get soft drinks from the machine in a cup with ice. When the machine is running properly, the average number of fluid ounces in the cup should be 14. Periodically the machines need to be tested to make sure that they have not gone out of adjustment. To do this, six cups are filled by the machine and a technician carefully measures the volume in each cup. In one such test, the following data were observed:
a. What would be the correct null hypothesis if the company wishes to test the machine?
b. Calculate the 95% confidence interval. Do you fail to reject the null hypothesis?
Purchase this Solution
Solution Summary
This solution shows how to formulate a null hypothesis and how to calculate the 95% confidence interval in order to evaluate it.
Solution Preview
Please check the attachment for the full solution. My answer is written in red.
a) Answer: choose b. Because we want to test whether the average number of fluid ounces in the cup is ...
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
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.
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.