Concept explainers
Suppose that fund-raisers at a university call recent graduates to request donations for campus outreach programs. They report the following information for last year’s graduates:
Three attempts were made to contact each graduate. A donation of $0 was recorded both for those who were contacted but who declined to make a donation and for those who were not reached in three attempts. Consider the variable x = amount of donation for the population of last year’s graduates of this university.
a. Write a few sentences describing what you think you might see if the value of x was observed for each of 1000 graduates.
b. What is the most common value of x in this population?
c. What is P(x ≥ 25)?
d. What is P(x > 0)?
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Introduction to Statistics and Data Analysis
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