A study conducted by a research group in a recent year reported that56

%

of cell phone owners used their phones inside a store for guidance on purchasingdecisions.A sample of16

cell phone owners isstudied.Round the answers to at least four decimalplaces.

Part 1 of 4

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

.

Part 2 of 4

(b) What is the probability that fewer than ten of them used their phones for guidance on purchasingdecisions?The probability that fewer than ten of them used their phones for guidance on purchasing decisions is

.

Part 3 of 4

(c) What is the probability that exactly seven of them used their phones for guidance on purchasingdecisions?The probability that exactly seven of them used their phones for guidance on purchasing decisions is

.

Part 4 of 4

(d) Would it be unusual if more than12

of them used their phones for guidance on purchasingdecisions?It

(Choose one)

be unusual if more than12

of them used their phones for guidance on purchasing decisions since the probability is

.