Consider the following to answer questions
Previous surveys reported that more men than women trade stocks online.A local
brokerage firm randomly selected a sample of investors.They found that 45 of 234 men
traded online and 42 of 251 women traded online.
-The 95% confidence interval for the difference in proportions is
A)4% to 9%.
B)-4% to 9%.
C)2% to 12%.
D)-2% to 12%.
E)-2% to -4%

Question

Consider the following to answer questions 
Previous surveys reported that more men than women trade stocks online.A local
brokerage firm randomly selected a sample of investors.They found that 45 of 234 men
traded online and 42 of 251 women traded online.
-The 95% confidence interval for the difference in proportions is
A)4% to 9%.
B)-4% to 9%.
C)2% to 12%.
D)-2% to 12%.
E)-2% to -4%

Quizplus · Accepted Answer

The Answer of Consider the following to answer questions 
Previous surveys reported that more men than women trade stocks online.A local
brokerage firm randomly selected a sample of investors.They found that 45 of 234 men
traded online and 42 of 251 women traded online.
-The 95% confidence interval for the difference in proportions is
A)4% to 9%.
B)-4% to 9%.
C)2% to 12%.
D)-2% to 12%.
E)-2% to -4%

Consider the Following to Answer Questions