Question: ey randomly sample 50 cars with the new engine model and yields an average mpg of 26.8 highway mpg with a standard deviation of 4.5

ey randomly sample 50 cars with the new engine model and yields an average mpg of 26.8 highway mpg with a standard deviation of 4.5 mpg. According to recent data, the current average is 25.1 highway mpg. What is the value of the effect size in this experiment?

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