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The normal distribution is defined for all real numbers.
d) If the 3rd customer to sign up for the loyalty card is the 15th customer approached, would this outcome surprise you? Explain why or why not.
b) In this context, assuming the conditions for the binomial hold, would it make sense to use the normal approximation to the binomial?
f) Are the two variables statistically independent? Justify your answer and present any relevant calculations.