Multiple-Choice Exam A student takes a 19-question, multiple-choice exam with two choices for each question and guesses on each question. Assume the variable is binomial. Find the probability of guessing at least 8 out of 19 correctly. Round the answer to at least four decimal places. P(guessing at least 8 out of 19 correctly)=

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A:   Hence, the required 95% confidence interval for population mean is (516.503,859.497) .      

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