1. Engineering has collected data on alternative process costs for building transmissions in the worksheet Transmissions Costs. Use hypothesis testing (at the 0.05 significance level) to determine if the evidence is sufficient to show that the proposed processes (Process A and Process B) are each more cost-effective than the current process. State your hypotheses and show your output. Provide a brief explanation of your analysis in a way that management can easily understand

2. Add to your findings about the Transmission Costs data by constructing confidence intervals to determine whether either of the proposed processes is more cost-effective than the current process. Provide a brief explanation of your analysis in a way that management can easily understand.