Consider the Following to Answer the Question(s) Below

Multiple Choice

Consider the following to answer the question(s) below:
Management styles differ among organizations and may potentially affect employee job satisfaction. A sample of employees was randomly selected from each of three companies with different management styles (Authoritarian, Laissez faire and Participative) and asked to rate their level of job satisfaction on a 10-point scale (10 being the highest level of satisfaction) . The data collected and partial ANOVA results appear below.

-The correct null hypothesis is

A) Mean employee job satisfaction ratings are equal across companies with different management styles.
B) Mean employee job satisfaction ratings are not all equal across companies with different management styles.
C) Management styles do not affect employee job satisfaction ratings.
D) Mean employee job satisfaction ratings are equal across companies with different management styles and that management styles do not affect employee job satisfaction ratings.
E) Mean employee job satisfaction ratings are not all equal across companies with different management styles and that management styles do not affect employee job satisfaction ratings.