B. The manager wants to find out whether or not there is a significant difference between the daily meal allowances of day and night shift employees in his company. By random sampling, he took a sample of 230 employees from the day shift. These employees were found to have a mean daily allowance of Php 45. He also took a sample of 200 employees in the night shift. They were found to have a mean daily allowance of Php 40. The total population in that school had a standard deviation of 4.5. Is there a significant difference in the daily allowance of the two groups of employees at 1% level of significance? (20 points) Hypothesis: Ho: Ha: Level of Significance: a = df = Critical/Tabular Value: Decision Rule: At level of significance, accept Ho if Statistic: Computed Value: Decision: Conclusion