Question: A study conducted by the Pew Research Center reported that 60% of cell phone owners used their phones inside a store for guidance on purchasing
A study conducted by the Pew Research Center reported that 60% of cell phone owners used their phones inside a store for guidance on purchasing decisions. A sample of 15 cell phone owners is studied.
a) What is the probability that exactly eight of them used their phones for guidance on purchasing decisions?
b) What is the probability that 12 or more of them used their phones for guidance on purchasing decisions?
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