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A newspaper survey found that 65% of readers found online tutorials useful. If a random sample of 9 readers is selected, compute the standard deviation of the probability distribution.

statistics 
Anonymous,
Suppose you are given data from a survey showing the IQ of each person interviewed and the IQ of his or her mother. That is all the information you have. Your boss has asked you to put together a report showing the relationship between these two variables. What could you present and why?