One-Proportion Z-Test Conditions
A researcher will conduct a one-sample z-test for a population proportion to investigate the claim that the proportion of adults in a city who support a new public transportation initiative is greater than 0.40. Which of the following is a necessary condition for this test?
A
The standard deviation of the population must be known
B
The population must be normally distributed
C
The sample size must be at least 30
D
np₀ ≥ 10 and n(1-p₀) ≥ 10
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