Math 209 6 2 17 Statistics Tutorial Normal Distributions Invnorm

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On question 18 they provide the area on the right now we need to know the area on the left because the

Find the z-score that corresponds to the cumulative area so 29 is 0.4364 the picture looks like this we would type

This problem is from the following book: http://goo.gl/t9pfIj We calculate areas on the standard

... two tails so if we divide that by

The random variable x is

... percent of the distribution's area to its left so our picture looks like this and we would type

Last section we were focusing on the standard

Question 23 is different from the previous questions because we are no longer looking at the standard

... of that to get the right z-score so

... and x2 so let's look at x1 first we need to type

... so the probability is actually exactly half so it should be point five or fifty percent but let's do the

On question 24 we are looking at a

Math 209 : 6.2 #2 (Statistics Tutorial : Normal Distributions, normalcdf)

... that we can use the

On question 19 we are given an area on the right so we need to type

17

... on the right when we use the

This