Mathematics, 09.12.2021 09:20 PONBallfordM89

What should I buy? A study conducted by a research group in a recent year reported that 57% of cell phone owners used their phones inside a store for guidance on purchasing decisions. A sample of 15 cell phone owners is studied. Round the answers to at least four decimal places. What is the probability that fewer than ten of them used their phones for guidance on purchasing decisions?

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