(ANOVA)

Sue owns a yarn shop and want to expands her color selection. Before she expands her colors, she wants to find out if her customers prefer one brand over another brand. Specifically, she is interested in three different types of bison yarn.

As an experiment, she randomly selected 21 different days and recorded the sales of each brand. At the .10 significance level, can she conclude that there is a difference in preference between the brands?

Misa's Bison Yak-et-ty-Yaks Buffalo Yarns

799 776 799

784 640 931

807 822 794

675 856 920

795 616 731

875 893 837

total 4,735.00 4,603.00 5,012.00

1)What is the null hypothesis?

2)What is the alternative hypothesis?

3)What is the level of significance?

Use Tools - Data Analysis - ANOVA:Single Factor

4) From the ANOVA output: What is the F value?

5)What is the F critical value?

6)What is your decision? Explain in statistical terms