Question

Consider the data with analysis shown in the following computer output: Level N Mean StDev A 4 10.000 3.159 B 5 16.800 2.168 C 6 10.800 2.387 Source DF SS MS F P Groups 2 134.72 67.36 10.46 0.002 Error 12 77.23 6.44 Total 14 211.95 Is there sufficient evidence of a difference in the population means of the three groups? Yes No

Answer 1

Correct option "Yes"

Here we have p-value is 0.002

at the 99% confidence level alpha value 0.01

than the p-value is less than alpha value so we reject the null hypothesis and we can say that the the there is sufficient evidence to of a difference in the population mean.

(Here p-value is very small )

(but here we have alpha value and critical value no one is given so we cannot exactly decied there is difference or not )