Purchase Solution

Variable and Averages

Not what you're looking for?

Ask Custom Question

Choose a variable. Before collecting the data, decide what a likely average might be, then complete the following:
a. Write a brief statement of purpose of the study
b. Define the population
c. State the hypotheses for the study
d. Select an a value
e. State how the sample was selected
f. Show the rae data
g. Decide which statistical test is appropriate and compute the test statistic (z or t). Why is the test appropriate?
h. Find the critical values(s)
i. State the decision
j. Summarize the results.

Purchase this Solution

Solution Summary

This solution uses an example of cigarette smoking and lung disease and provides a null and alternative hypothesis. It calculates the z-statistic and compares it to the level of significance to accept or reject the null hypothesis.

Solution Preview

Suppose I believe that almost a quarter of those who smoke cigarettes develop lung disease at some or the point in their lives. For this reason, I wish to conduct a research hypothesis about the population proportion of smokers who develop lung disease in the lifetime. Clearly, the population here is the people who smoke ...

Purchase this Solution


Free BrainMass Quizzes
Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.

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

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.