Wii Game Sales. The following table represents the number of units sold in the United States for the week ending March 26, 2011, for a random sample of eight Wii games.11 Assume . Use this information for Exercises 80–85.

Game Units
(1000s)
Game Units
(1000s)
Wii Sports Resort 65 Zumba Fitness 56
Super Mario All
Stars
40 Wii Fit Plus 36
Just Dance 2 74 Michael Jackson 42
New Super Mario
Brothers
16 Lego Star Wars 110

Question 8.84

wiisales

84. Calculate and interpret the margin of error for the confidence interval in Exercise 83.