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In a Psy 320 class (N=50) the number of close friends people reported having had a mean of 4.76, and a standard deviation of 4.77.
In a Psy 320 class (N=50) the number of close friends people reported having had a mean of 4.76, and a standard deviation of 4.77. What is the standard error of the mean, as calculated from the sample? Place a 95% confidence interval around the mean. Interpret what this confidence interval tells us. What are two ways to decrease the size of a confidence interval? Why would we want to do this
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