Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

1.1.A supplier of a household disinfectant liquid launched a promotional campaign to increase sales of its 500 ml bottles. Before the campaign, the average weekly

image text in transcribed
1.1.A supplier of a household disinfectant liquid launched a promotional campaign to increase sales of its 500 ml bottles. Before the campaign, the average weekly sales (in cases sold) were recorded at 12 randomly chosen retail outlets throughout KwaZulu-Natal. Three weeks after the campaign, average weekly sales were again recorded at the same 12 outlets. The average weekly sales (in cases sold) are shown for each of the 12 retail outlets as follows: Sales in cases per outlet before and after the promotional campaign. OUTLET A C D E F G H K L SALES (before) 12 14 9 13 15 10 12 10 13 12 10 SALES (after) 12 11 14 9 11 16 11 13 11 13 14 11 Can the suppliers of the household disinfectant conclude that the promotional campaign has been a success? Test this management question statistically. Formulate the null and alternative hypotheses to answer this management question. Conduct a matched-pairs t-test at the 5% significance level. What is your conclusion? (15) 1.2. Chester Butchery supplies Vienna sausages in the entire of KZN province. A meat packer is investigating the marked mass shown on Vienna sausages. A pilot study showed a mean of 11.8kg per pack and a variance of 0.49kg. How many packs should be sampled in order to be 92% confident that the sample mean will differ by at most 0.2kg? (15)

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Mathematics For Liberal Arts Majors

Authors: Christopher Thomas

1st Edition

0071544305, 9780071544306

More Books

Students also viewed these Mathematics questions