What should I buy? A study conducted by a research group in a recent year reported that 56% of cell phone owners used their phones inside a store for guidance on purchasing decisions. A sample of 16 cell phone owners is studied. Round the answers to at least four decimal places.

(a)What is the probability that five or more of them used their phones for guidance on purchasing decisions?
The probability that five or more of them used their phones for guidance on purchasing decisions is