HSS 2381 Lecture Notes - Lecture 5: Raisin Bran, Null Hypothesis, Corn Starch
17 Oct 2017
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Hypothetical testing significance level is the grey region confidence level is the rest under the curve point of reference know this! In the abc school, average marks in 8th grade mathematics class is: we randomly select 30 students and calculate their average score, their average comes to be 95. These 30 students are different than the 8th grade mathematics class --- two different populations. The result is due to random chance only i. e. we found the average value of 85. It could have been higher / lower than 85 since there are students having average score less or more than 85. Calculate the probability that sample would have average score of 95. This 5% is called significance level = . It means that if random chance probability is less than 5% (p<0. 05) then we can conclude that there is difference in behavior of two different populations. (1- significance level) = confidence level i. e. we can say that.
