Answered: A corporation owns a chain of several…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Using the R Programming. Make a script, analyze and interpret the console output. Submit your answer in a statistical procedure.

A corporation owns a chain of several hundred gasoline stations on the eastern seaboard. The marketing director wants to test a proposed marketing campaign by running ads on some local television stations and determining whether gasoline sales at a sample of the company' s stations increase after the advertising. The following data represent gasoline sales for a day before and a day after the advertising campaign. Determine whether sales increased significantly after the advertising campaign. Use an alpha of 0.05.

Station
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Before
10,500
8,870
12,300
10,510
5,570
9,150
11,980
6,740
7,340
13,400
12,200
10,570
9,880
12,100
9000
11,800
10500
After
12,600
10,660
11,890
14,630
8,580
10,115
14,350
6,900
8,890
16,540
11,300
13,330
9,990
14.050
9,500
12,450
13,450

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ISBN:

9780078022159

Author:

Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:

McGraw-Hill Education