Hypothesis Testing: One Sample Tests
Not what you're looking for?
Question:
The amount of water consumed each day by a healthy adult follows a normal distribution with a mean of 1.20 liters. A sample of 10 adults after the campaign shows the following consumption in liters:
- 1.34 1.32 1.38 1.40 1.70 1.40 1.32 1.90 1.38 1.36
At the 0.10 significance level, can we conclude that water consumption has increased? Calculate and interpret the p-value.
(a) State the null hypothesis and the alternate hypothesis. (Round your answers to 2 decimal places.)
(b) State the decision rule for .10 significance level. (Round your answer to 3 decimal places.)
(c) Compute the value of the test statistic. (Round your intermediate and final answer to 3 decimal places.)
(d) At the 0.10 level, can we conclude that water consumption has increased?
(e) Estimate the p-value.
Purchase this Solution
Solution Summary
This solution involves working with one-sample t-tests to conduct hypothesis testing.
Solution Preview
(a) H0: mu=1.20 vs H1: mu>1.20
Reason: We are testing if the water consumption has increased. The word "increase" means a ">" sign.
(b) Since we ...
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.
Terms and Definitions for Statistics
This quiz covers basic terms and definitions of statistics.
Measures of Central Tendency
Tests knowledge of the three main measures of central tendency, including some simple calculation questions.
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.