6.A certain test preparation course is designed to help students improve their scores onthe LSAT exam. A mock exam is given at the beginning and end of the course todetermine the effectiveness of the course. The following measurements are the netchange in 4 students' scores on the exam after completing the course:12, 7, 13, 11Using these data, construct a 80% confidence interval for the average net change in astudent's score after completing the course. Assume the population is approximatelynormal.Step 1. Calculate the sample mean for the given sample data. Round your answer to onedecimal place.Answer:Step 2. Calculate the sample standard deviation for the given sample data. Round youranswer to one decimal place.Answer:Step 3. Find the critical value that should be used in constructing the confidenceinterval. Round your answer to three decimal places.Answer:Step 4. Construct the 80% confidence interval. Round your answer to one decimalplace.

Given that the measurements of the net change in 4 students score on the exam after completing the…

Answered: 6. A certain test preparation course is…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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3. P( ス स्याराह Laluate
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6. A certain test preparation course is desig