While constructing a confidence interval for the mean difference ...

[tuffie]

While constructing a confidence interval for the mean difference in paired data, as the sample size increases, the width of the interval also increases.
 
  Indicate whether the statement is true or false

Question 2

What is the probability that a spinning machine just placed back in service will need maintenance before it produces 4 miles of wire?
 
  What will be an ideal response?

[Bison]

Answer to Question 1

FALSE

Answer to Question 2

E(X) = 1/ =12.3, then = 0.0813, and P(X < 4 ) = 1 - e-4 = 1 - e-0.3252 = 0.2776.