A friend of mine has the clothing store and sells various lines of shoes. Tell me at the 0.05 level of significance if there is any preference among the lines by customers. If there is the preference, tell me which line(s) are preferred. This study is a current sample of month's worth of sales averaged over one year by months.
Brand # sold
Nike 40
Adidas 31
Avia 35
Brooks 24
New Balance 28
Diadora 22