Hello I could use some help in understanding this problem for my math class.

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) = 3.093,

p ² = 0.16).

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