Question 6 Consider the design of a communication system. (a) How many three-digit phone prefixes that are used to represent a particular geographic area (such as an area code) can be created from the...

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Extracted text: Question 6 Consider the design of a communication system. (a) How many three-digit phone prefixes that are used to represent a particular geographic area (such as an area code) can be created from the digits 0 through 9? (b) As in part (a), how many three-digit phone prefixes are possible that do not start with o or 1, but contain o or 1 as the middle digit? (C) How many three-digit phone prefixes are possible in which no digit appears more than once in each prefix? Use the editor to format your answer Question 7 Dennis, your group leader, decides to experiment on the possible outcomes when a 8-sided die is flipped (X) and an unfair coin (0.7 Heads) is tossed (Y). He asked you to do the following for the group: a. Create a Joint Probability Distribution for the outcomes. b. Marginal Probability Distribution of X. C. Are the variables dependent or independent? How? Use the editor to format your answer