Problem to start class on Sept. 9th :  #15 on page 413 Suppose there is a normally distributed population with a mean of 100 and a standard deviation of 10.  If x bar is the average of a sample of 50, find the following probabilities. a. P(x bar <=110)    b. P(x bar>=90)   c. P(95<= x bar <= 115)   d.  P(85<= x bar <= 98)

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.