Three brands of petrol were compared on five makes of car. Table below shows the kilometers travelled in each case, on a standard amount of petrol under similar conditions. Petrol brand
Make of car
A B C D E

1
2
3
31.0 33.5 28.0 40.1 34.1
29.5 31.4 25.0 30.2 32.1
22.7 32.1 26.4 29.8 30.1

Required: Carry out the analysis of variance (ANOVA) and test, at the 5% level of significance, for differences between makes of car and between brands of petrol.​

Catherine sat down will all of her income details from the past year to calculate the total income she had in that period. after she created a consolidated income statement, she deducted some tax-exempt income details from the statement. what term would catherine use for this final income calculation?

Pj conducts an experimental study on the effects of soft music during high stakes science testing. he randomly assigns students at the school. in one condition he does not provide music for testing while in the other group he does provide the music. he administers a pretest at the beginning of the year and a posttest at the end of the year. pj’s design is best described as a: a.static group comparisonb. pretest-posttest control group designc.control-group-time-series designd. nonrandomized control-group pretest-posttest design

Black death spread because of what problem in medieval europe? which one is it i need the answer quick . a- overcrowded cities b-too many farm animals c-not enough qualified doctors d-all of the above