Question

Three types of cars were sold at a dealership. The monthly sales are normally distributed and have the same variance. Do an ANOVA test at the 5% significance level for the hypothesis that all three cars sell equally well on average.

Month	Red	Blue	Green
September	10	6	9
October	9	5	8
November	9	6	10
December	11	8	5

Answer 1

Ans:

Ans:

H0:The average number of cars sold is same for three types.

Ha:There is difference in average number of cars among three types of cars.

Observed F statistic:

F=5.128

p-value=0.0326

As,p-value<0.05,we reject the null hypothesis.

There is sufficient evidence to conclude that there is significant difference in average number of cars among three types of cars.