Select the appropriate test statistic decision and conclusio

Select the appropriate test statistic, decision, and conclusion....

In a study of cellular phones, it was of interest to see if the phone type had any effect on the amount of radiation produced. The phones were classified as either a standard cell or a PDA/Smartphone and their at-use radiation emission was recorded for several varieties of phone. A one-way ANOVA procedure was used which yielded the following information: Based on the output, does it appear that phone type affects the amount of radiation emitted? Given that the critical value for the test is 6.6565. select the appropriate test statistic (TS). decision, and conclusion below. (Use a = 0.01.) TS = 2.629. fail H0, reject Ho. phone type appears to affect radiation TS = 0.330. fail H0 reject Ho. phone type does not appear to affect radiation TS = 7.9671. reject H0, phone type appears to affect radiation TS = 7.9671. reject H0, phone type does not appear to affect radiation

Solution

ANOVA table

Source

SS

Df

MS

F

factor

2.629

1

2.629

7.9671

Error

387.728

1175

0.329981

Total

390.357

1176

Calculated F=7.9671 > 6.6565 table value

The null hypothesis is rejected.

Answer: C   TS=7.9671, reject Ho, phone type appears to affect radiation.

Source	SS	Df	MS	F
factor	2.629	1	2.629	7.9671
Error	387.728	1175	0.329981
Total	390.357	1176