A sample of eight students were selected to test the effectiveness of a course designed to improve typing skills. Their typing scores beforeand after the course are recorded below. Test Ho:Hp=0 against H1:Hp >0 at a = 0.01.Before 45 38 60 35 70 48 39 49After56 42 623975 50 4256The value of D, the sample mean of the differences is:-5.43-4.75-5.2-38

Before After D 45 56 -11 38 42 -4 60 62 -2 35 39 -4 70 75 -5 48 50 -2 39 42 -3 49 56…

Answered: The value of D, the sample mean of the…

Math

Statistics

The value of D, the sample mean of the differences is: -5.43 -4.75 -5.2 -38

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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Concept explainers

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

Question

A sample of eight students were selected to test the effectiveness of a course designed to improve typing skills. Their typing scores before
and after the course are recorded below. Test Ho:Hp=0 against H1:Hp >0 at a = 0.01.
Before 45 38 60 35 70 48 39 49
After
56 42 62
39
75 50 42
56
The value of D, the sample mean of the differences is:
-5.43
-4.75
-5.2
-38

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