Mathematics, 03.01.2020 03:31 squawk1738
Which of the following conditions must be met if you want to use z-procedures to construct a confidence interval for a population proportion?
a. the sample size must be at least 30 (some texts say 50).
b the population must be at least 10 times as large as the sample (some texts say 20).
c. both npˆ and n(1 − pˆ) must be at least 10 (some texts say greater than 5).
Answers: 3
and standard deviation 
, a large sample size, of at least 30, can be approximated to a normal distribution with mean 
.
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Which of the following conditions must be met if you want to use z-procedures to construct a confide...
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