QuestionLet X1,X2,…,X30X_1, X_2, \ldots, X_{30} be i.i.d. Bernoulli(0.8)(0.8). Define a new random variable Y=X1+X2+⋯+X30Y=X_1+X_2+\cdots+X_{30}. Using the Central Limit Theorem, find the approximate value of P(Y>21)P(Y>21). Enter the answer correct to two decimal places.