In a survey of 280 adults over 50, 70 said they were taking ...

[ETearle]

In a survey of 280 adults over 50, 70 said they were taking vitamin supplements. Find the margin of error for the 99 confidence interval used to estimate the population proportion. Give your answer as a percentage.
 
  A) 5.37 B) 7.05 C) 19.7 D) 9.8 E) 12.9

Question 2

The probability that Luis will pass his statistics test is 0.44. Find the probability that he will fail his statistics test.
 
  A) 2.27 B) 0.56 C) 0.79 D) 0.22

[fraziera112]

Answer to Question 1

B

Answer to Question 2

B

[ETearle]

Thanks for the timely response, appreciate it

[lcapri7]

Wow, this really help