Q:Question:software company wishes to study the number of hours senior executives spend time at their desktop computers. The manager selected a sample of 18 executives from of three industries such as Banking, Retail and Insurance. Banking 8 6 6 7 8 Retail 12 10 12 10 12 11 11 Insurance 8 8 8 8 6 6 At the 0.05 significance level, can he conclude there is a difference in the mean numbers of hours spent per week by industry? (10 marks)