While researching lifestyle changes to improve heart health, you come across a research article reporting that the average American consumes about 2,700 calories per day(= 2,700).

You come across another article that refutes this, stating that a sample of Americans consumed significantly less than this mean standard on average,t(50) =3.367,

p< 0.05 (²=0.18).

Assuming this test was a one-independent samplet-test, answer the following questions.

(a) Is this a significant effect?

Yes, the effect is significant.

No, the effect is not significant.

(b) What is the proportion of variance for this effect? (Round your answer to two decimal places.)