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) exactly two mean employee job satisfaction ratings are equal, and one mean is different.
B) mean employee job satisfaction ratings are not all equal across companies with different management styles.
C) management style affects employee job satisfaction rating.
D) mean employee job satisfaction ratings are equal across companies with different management styles.
E) two particular management styles affect employee job satisfaction rating, and one style is not significant.