Data is collected from a piece of equipment before and after…

Data is collected from a piece of equipment before and after maintenance has been performed on it. Statistically compare the two data sets to determine if there is a statistical difference in the two means (assume the standard p-value). SHOW ALL YOUR WORK Before Maintenance: Sample Mean = 52.1, Sample Standard Deviation = 2.2, N = 10 After Maintenance: Sample Mean = 49.9, Sample Standard Deviation = 2.5, N = 10

IBM has three types of revenue and related costs: Services,…

IBM has three types of revenue and related costs: Services, Sales, and Financing. Which of the following statements is true regarding the types of revenue and their gross profit percentages for 2016? Hint: You need to calculate the gross profit percentage for each type of revenue.