Bio Statistics
Not what you're looking for?
#1. An investigator wants to estimate caffeine consumption in high school students. How many students would be required to ensure that a 95% confidence interval estimate for the mean caffine intake(measured in mg) is within 15 units of the true mean? Assume that the standard deviation in caffine intake is 68 mg.
#2. Consider the study proposed in problem #1. How many students would be required to estimate the proportion of students who consume coffee? Suppose we want the estimate to be within 5% of the true proportion with 95% confidence.
1. What is the effect on the probability of a TYPE II error when the probability of a TYPE I error is decreased? Describe type I and II errors of a mammography in terms of the diagnosis. Add this text with the solution to the spreadsheet created for the above problems. I need this done on an excel spreadsheet with detailed steps.
Purchase this Solution
Solution Summary
Step by step method for computing test statistic and sample size for a bio statistics problem.
Purchase this Solution
Free BrainMass Quizzes
Terms and Definitions for Statistics
This quiz covers basic terms and definitions of statistics.
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.