Question

Which of the following conditions must be met if you want to use z-

procedures to construct a confidence interval for a population proportion?
1. The sample size must be at least 30 (some texts say 50).
II. The population must be at least 10 times as large as the sample (some
texts say 20).
III. Both np and n(1-P) must be at least 10 (some texts say greater than 5).
A. I only
B. Il only
C. III only
D. II and Ill only
E. All are necessary conditions.

Answer 1

Answer: II and III only (2 and 3 only)

Step-by-step explanation: took test and got it right