1i have three groups for which i want to perform an anova

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1. I have three groups for which I want to perform an ANOVA. They have standard deviations s1 = 2.5, s2 = 3.4, s3 = 6.4 and the plots of the data indicate all samples are approximately Normal with no outliers. Is the ANOVA appropriate?

A. Yes
B. No
C. Not enough information to tell.

2. One characteristic of billiard balls is their elasticity - the bounce they get when striking one another. A manufacturer of billiard balls is testing three additives to the basic plastic. Here are the summary statistics.

1592_12-6.gif

The estimate of the pooled standard deviation, s, is
A. 54.56.
B. 7.39.
C. 7.56.

3. One characteristic of billiard balls is their elasticity - the bounce they get when striking one another. A manufacturer of billiard balls is testing three additives to the basic plastic.

352_12-7.gif

The F statistic for the ANOVA test is
A. 3.84.
B. 51.86.
C. 11.50.

Reference no: EM13353905

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