Question
Construct a confidence interval for p 1 minus p 2 at the given level of confidence....
Construct a confidence interval for p 1 minus p 2 at the given level of confidence. x 1 equals 386, n 1 equals 516, x 2 equals 411, n 2 equals 595, 90 % confidence The researchers are nothing % confident the difference between the two population proportions, p 1 minus p 2 , is between nothing and nothing . (Use ascending order. Type an integer or decimal rounded to three decimal places as needed.)
Homework Answers
Answer #1
Refer Z-table or use excel function "=NORM.S.INV((1-0.05))" to find the Z-value
The researchers are 
confident the difference between the two
populationproportions, 
, is between 
and 
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