STAT 1000Q Lecture Notes - Lecture 25: Sampling Distribution, Point Estimation, Test Statistic
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Stat 1000q lecture 25 - more on hypothesis testing. Terminology population proportion (p)- the fraction of a population that has a speci c characteristic of interest under study. It is xed but usually unknown. sample proportion (p )- the point estimate of p. it is calculated using the equation p = x/n. q - the proportion of the sample without the characteristic of interest. It is calculated using the the equations q = 1-p , and q = (1) - (x/n) = (n-x)/(n). sampling distribution- distribution belonging to p , which contains mean. We will use the same rules as before: If h0: p = 0. 75 then p0 = 0. 75. By a corollary of the clt, the sampling distribution of p is approx: Right tailed test: p-value is the area to the right of z under a n(0,1) graph, p-value = normalcdf(z, 1099)
