Past usage of Facebook. Refer to the Pew Internet survey described in Example 8.1. There were 334 Internet users who dont use Facebook. Of these, 67 reported that they have used Facebook in the past. (a) What is the sample size n for the population of Internet users who dont use Facebook? (b) In this setting, describe the population proportion p in a short sentence. (c) What is the count X of Internet users who dont use Facebook but have used Facebook in the past? (d) Find the sample proportion p.

STAT 206 Chapter 6: Normal Distribution and Other Continuous Distributions 6.2 The Normal Distribution ● Normal Distribution: ost common continuous distribution used in statistics ○ Importance: ■ Numerous continuous variables common in business have distributions that closely resemble the normal distribution ■ The normal distribution can be used to approximate various discrete probability distributions ■ The normal distribution provides the basis lassical statistical inference because of its relationship t entral Limit Theorem ○ Theoretical Properties: ■ Bell-shaped curve