Question

We like to see the effect of design (design A, B, C and D) on customer ratings with 0.05 alpha.

We have following outputs of ANOVA test.

Df Sum Sq Mean Sq F value Pr(>F)   

golf$design 3 2991.0 997.0 53.03 0.00045 ***

Residuals 36 676.8 18.8

Signif. codes: 0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1

Which one is the correct statement?

	a.	Since p-value is less than 0.05, reject H0. Thus, there is no evidence that not all mean ratings of designs are equal.
	b.	Since p-value is less than 0.05, do not reject H0. Thus, there is evidence that not all mean ratings of designs are equal.
	c.	Since p-value is less than 0.05, do not reject H0. Thus, there is no evidence that not all mean ratings of designs are equal.
	d.	Since p-value is less than 0.05, reject H0. Thus, there is evidence that not all mean ratings of designs are equal.

Answer 1

Answer:-

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