AppliedNumeric answer
Twenty signals at five per cent · Part 2 of 3
A researcher tests 20 candidate signals, each with its own test at the 5% level. The tests are independent, and in truth none of the signals has any predictive power.
What is the probability that at least one of the 20 signals comes out significant, to three decimal places?
Answer with a number. Fractions, powers and expressions like 23/6 or C(52,5) are read correctly in practice.
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