Exam 1 PS 217, Spring 2010 Convert to z
... 3a. As you know, gestation periods are normally distributed with µ = 268 and σ = 16. Imagine that you are giving a talk to 64 pregnant women who happen to be cigarette smokers. Suppose that you want to tell them what the average (mean) gestation period would be for a group that size and you want to ...
... 3a. As you know, gestation periods are normally distributed with µ = 268 and σ = 16. Imagine that you are giving a talk to 64 pregnant women who happen to be cigarette smokers. Suppose that you want to tell them what the average (mean) gestation period would be for a group that size and you want to ...
t-test
... Recall: Sample means from a population will be normally distributed: -> higher chance of sample means being similar than not However sometimes samples do not have similar means: -> large difference in sample means by chance alone we need to account for this when figuring out if samples are different ...
... Recall: Sample means from a population will be normally distributed: -> higher chance of sample means being similar than not However sometimes samples do not have similar means: -> large difference in sample means by chance alone we need to account for this when figuring out if samples are different ...
Statistics - Kellogg School of Management
... or disbelieving a true statement)? – Again, the answer is typically already in the manager’s head. • What does the relevant data tell us? – The answer is typically not originally in the manager’s head. The goal of hypothesis testing is to put it there, in the simplest possible terms. • Then, the job ...
... or disbelieving a true statement)? – Again, the answer is typically already in the manager’s head. • What does the relevant data tell us? – The answer is typically not originally in the manager’s head. The goal of hypothesis testing is to put it there, in the simplest possible terms. • Then, the job ...
