Samuel Morse determined that the percentage of "t's" in the English language in 1836 was 10%. A researcher interested in testing whether the percentage has changed since 1836 took a random sample of 750 letters from the 4/5/20 issue of the New York Times, finding it contained 90 "t's." Which of the equations below is the proper way to calculate the test statistic? OA. 0.10 0.12 OB. 20 0.12(10.12) 750 0.12 -0.10 0.10(10.10) 750

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