AT&T; LTE 9:55 AM InClassBonus Ch 12-3: Attempt 1 Timed Test Question1 -12 An el

Question

AT&T; LTE 9:55 AM InClassBonus Ch 12-3: Attempt 1 Timed Test Question1 -12 An electronics manufacturer was evaluating whether customers' satisfaction depended on which configuration of personal media player they purchased. In a random sample of customers, 8 had purchased cassette players, 15 had purchased CD players and 11 had purchased MP3 players. Each customer sampled was measured on a satisfaction index and in the manufacturer's ANOVA, SSE 1,400 and SSTR 700, Use a=0.05. What is the F test statistic for this hypothesis test? 1 5.25 2 5.50 3 5.75 4 6.50 5 6.25 6 6.00 1 of 1 completed

Explanation / Answer

There are k=3 groups.

dfTR=k-1=3-1=2

MSTR=SSTR/dfTR = 700/2=350

Here n=8+15+11=34

dfE=n-k=34-3=31

MSE=SSE/dfE=1400/31=45.16

F=MSTR/MSE = 350/45.16 = 7.75

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