The claim is that the proportion of peas with yellow pods is equal to 0.25 (or 25%). The sample statistics from one experiment
include
490
peas with
94
of them having yellow pods. Find the value of the test statistic.
1 answer:
p = 0.25
q = 1 - p = 0.75
x = 82
n = 400
psample = x/n = 82/400 = 0.205
test statistic, z = (psample - p) / sqrt(pq/n) = (0.205 - 0.25) / sqrt(0.25×0.75/400) = -2.078
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