Power Function Normal Population

Asked Mar 13 '20 at 16:57

Active Mar 13 '20 at 17:00

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I am looking to calculate the power function from a normal population with mean μ and known variance σ².

I'm trying to modify the "help" code:

## Power at mu=105 for H0:mu=100 vs. H1:mu>100 (sigma=15) 20 obs. (alpha=0.05) 
   sigma<-1
   c<-0
   mu<-0
   d<-(mu-c)/sigma
   pwr.norm.test(d=d,n=20,sig.level=0.05,alternative="greater")

For my test, the alternative is greater than 0 (c=0). I do not have numeric values for the mean and variance.

I also found a function "power.z.test" but the package is appears unavailable for R 3.6.1.

edited Mar 13 '20 at 17:00

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asked Mar 13 '20 at 16:57

mapleleaf

2

So you want to do a power calculation without specifying the mean and variance? – Dason Mar 13 '20 at 17:01
@Dason Yes. I want to specify the sample size and alpha only. Is this possible? – mapleleaf Mar 13 '20 at 17:49
1

No. It isn't possible. – Dason Mar 13 '20 at 20:01

Power Function Normal Population

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