Question
Three types of cars were sold at a dealership. The monthly sales are normally distributed and...
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 |
Homework Answers
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.
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