angeleyes42
04.05.2021 •
Mathematics
To compute the necessary sample size for an interval estimate of a population proportion, all of the following procedures are recommended when p is unknown except :
a. use the sample proportion from a previous study.
b. use the sample proportion from a preliminary sample.
c. use 1.0 as an estimate.
d. use judgment or a best guess.
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Ответ:
The student did not distribute properly to get A = P + Prt.
The equation can be fixed by putting a factor of P in the denominator: r = (A - P) / (Pt)
I just took this part of the lesson. Good luck to all!