People end up tossing 12% of what they purchase at the grocery store. Suppose this is the true population proportion and that you plan to take a sample survey of 540 grocery shoppers to further investigate their behavior.
a. What is the probability that your survey will provide sample proportion between 0.09 and 0.15?
b. What is the probability that your survey will provide sample proportion between 0.105 and 0.135?
c. What is the probability that your survey will provide sample proportion less than 0.10?