[R] Help -normal distribution

[Joshua Wiley]

Also note that you can 'switch' tails via the argument lower.tail.  By
default, it is TRUE.

> qnorm(p = .20, mean = 181, sd = 7.3, lower.tail = TRUE)
[1] 174.8562
> qnorm(p = .20, mean = 181, sd = 7.3, lower.tail = FALSE)
[1] 187.1438

Cheers,

Josh

On Sun, Aug 1, 2010 at 4:04 PM, Arun Kumar Saha
<arun.kumar.saha at gmail.com> wrote:
> I gave you hint only, however whatever you done is correct.
>
>
>
> On Mon, Aug 2, 2010 at 4:30 AM, n.a.s <nn.roh1 at gmail.com> wrote:
>> Hi,
>>
>> But i didn't understand why you did it like this qnorm(40/200)??
>>
>> I already found the answer  qnorm(.20,181,7.3) and qnorm(.80,181,7.3)
>>
>>
>> Thanks.
>>
>>
>> On Mon, Aug 2, 2010 at 12:33 AM, Arun.stat <arun.kumar.saha at gmail.com>
>> wrote:
>>>
>>> try
>>> qnorm(40/200)
>>> --
>>> View this message in context:
>>> http://r.789695.n4.nabble.com/Help-normal-distribution-tp2309730p2309735.html
>>> Sent from the R help mailing list archive at Nabble.com.
>>>
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>>
>>
>
> ______________________________________________
> R-help at r-project.org mailing list
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> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
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>



-- 
Joshua Wiley
Ph.D. Student, Health Psychology
University of California, Los Angeles
http://www.joshuawiley.com/