An advocacy group is interested in determining if gender (1 = Female, 2 = Male) affects executive level salaries. They take a random sample of executives in three different industries: (1 = Consumer Goods, 2 = Financial, 3 = Health Care). Salary data are collected. The two-way ANOVA results appear below. 
a. Is this an experiment or observational study?
b. Are the conditions for two-way ANOVA met?
c. If so, perform the hypothesis tests and state your conclusions in terms of amount spent online, gender, and income level.
d. Is it appropriate to interpret the main effects in this case separately? Explain.
Definitions:
Social Media
Platforms and websites that enable users to create and share content or participate in social networking.
Manager
An individual responsible for directing and overseeing the work of a group of people in an organization.
Company
An organization or business entity engaged in commercial, industrial, or professional activities.
Types of Audiences
Various groups of people categorized by specific characteristics or interests when presenting information or entertainment.
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