Math Problem Statement
A certain test preparation course is designed to help students improve their scores on the MCAT exam. A mock exam is given at the beginning and end of the course to determine the effectiveness of the course. The following measurements are the net change in 3 students' scores on the exam after completing the course:
1,6,5
Using these data, construct a 98% confidence interval for the average net change in a student's score after completing the course. Assume the population is approximately normal.
Step 2 of 4 : Calculate the sample standard deviation for the given sample data. Round your answer to one decimal place.'
Solution
Ask a new question for Free
By Image
Drop file here or Click Here to upload
Math Problem Analysis
Mathematical Concepts
Statistics
Confidence Intervals
Standard Deviation
Sample Variance
Formulas
Sample Mean: \bar{x} = \frac{\Sigma x}{n}
Sample Variance: s^2 = \frac{\Sigma (x - \bar{x})^2}{n-1}
Sample Standard Deviation: s = \sqrt{s^2}
Theorems
Central Limit Theorem
Suitable Grade Level
Undergraduate
Related Recommendation
Calculate Sample Mean, Standard Deviation, and 90% Confidence Interval for Test Scores
Calculate Mean, Sample and Population Standard Deviation and Variance
Calculate Mean and Standard Deviation of Sample Means for Population Distribution
Constructing a 90% Confidence Interval for the Population Mean Based on Sample Data
90% Confidence Interval for Population Standard Deviation - Biology Exam Scores