a. In your opinion, what is the probability that the last digit of a phone number is odd? Justify your answer.
b. Randomly choose one page from the residential section of your local phone book. Count how many phone numbers on that page have an odd last digit and how many have an even last digit. Then compute (number of phone numbers with odd last digits)/(total number of phone numbers).
c. Is your answer to part (b) a theoretical probability or a relative frequency? Justify your answer.
d. How do your answers to parts (a) and (b) compare? Are they exactly the same, approximately the same, or dissimilar? Discuss this comparison, taking into account the ideas of probability theory.
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