Use the Sign Test to Test the Indicated Claim

question 93

Essay

Use the sign test to test the indicated claim. An instructor gives a test before and after a lesson and results from
randomly selected students are given below. At the 0.05 level of significance, test the claim that the lesson has no effect
on the grade. Use the sign test. $$\begin{array} { | l l l l l l l l l l l l l l l l } \hline \text { Before } & 54 & 61 & 56 & 41 & 38 & 57 & 42 & 71 & 88 & 42 & 36 & 23 & 22 & 46 & 51 \\\text { After } & 82 & 87 & 84 & 76 & 79 & 87 & 42 & 97 & 99 & 74 & 85 & 96 & 69 & 84 & 79\end{array}$$

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Definitions:

Design Phase

A stage in a project where the plans, specifications, and blueprint for the project are developed.

Agile Development

A method of software development emphasizing incremental delivery, team collaboration, continual planning, and continual learning.

Development Methodology

A systematic approach to developing software that involves various phases such as planning, analysis, design, implementation, testing, and maintenance.

Tracking App

Software designed to monitor and record activity for various purposes such as fitness, health, or logistical tracking.