The scores of a random sample of 8 students on a physics test are as follows:   60, 62, 67, 69, 70, 72, 75, and 78.   a) Test to see if the sample mean is significantly different from 65 at the 0.05  level. Report the t and p values. b) The researcher realizes that she accidentally recorded the score that should have been 76 as 67. Are these corrected scores significantly different from 65 at the 0.05 level?

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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.