3. Suppose the daily number of parking tickets issued on campus has a mean of 1.4 tickets and a standard deviation 1.2 tickets. a) If we consider a semester as a random sample of 80 days, give the properties (and provide a sketch) for the sampling distribution for the sample mean number of tickets per day. b) Find the probability the semester will have a sample mean of less than 1 ticket per day. c) Could the population of tickets issued on individual days have a normal distribution? Explain why or why not. {Hint: Sketch and label a normal distribution for the variable. Does it make sense in this context?

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3. Suppose the daily number of parking tickets issued on campus has a mean of 1.4 tickets and a standard
deviation 1.2 tickets.
a) If we consider a semester as a random sample of 80 days, give the properties (and provide a sketch) for
the sampling distribution for the sample mean number of tickets per day.
b) Find the probability the semester will have a sample mean of less than 1 ticket per day.
c) Could the population of tickets issued on individual days have a normal distribution? Explain why or why
not. {Hint: Sketch and label a normal distribution for the variable. Does it make sense in this context?
Transcribed Image Text:3. Suppose the daily number of parking tickets issued on campus has a mean of 1.4 tickets and a standard deviation 1.2 tickets. a) If we consider a semester as a random sample of 80 days, give the properties (and provide a sketch) for the sampling distribution for the sample mean number of tickets per day. b) Find the probability the semester will have a sample mean of less than 1 ticket per day. c) Could the population of tickets issued on individual days have a normal distribution? Explain why or why not. {Hint: Sketch and label a normal distribution for the variable. Does it make sense in this context?
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