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 |
wiisales
83. Assuming that the game sales are normally distributed, construct and interpret a 99% confidence interval for the population mean number of units sold.
8.1.83
(27.6, 82.2). We are 99% confident that μ, the population mean Wii game sales, lies between 27.6 thousand units and 82.2 thousand units.