20 questions attached. Course Book - Managers guide to Statistics. These are homework questions. Need to be concise but informative. Show calculations for each question. Attaching course weekly lecture notes to help with solving questions.

Situation A VITRAN Bus Services VITRAN Bus Services purchases diesel fuel from Domino Gas Supply. In addition to fuel cost, Domino Gas Supply charges VITRAN Bus Services $250 per order to cover the expenses of delivering and transferring the fuel to VITRAN Bus Services storage tanks. The lead time for new shipment from Domino Gas Supply is 10 days, the cost of holding a gallon of fuel in the storage tanks is $0.04 per month, or $0.48 per year and the annual usage of fuel is 150,000 gallons. VITRAN Bus Services buses operate 300 days a year. What is the optimal order quantity for VITRAN Bus Services? How frequently should VITRAN Bus Services order to replenish the gasoline supply? The VITRAN Bus Services storage tanks a capacity of 15,000 gallons. Should VITRAN Bus Services considers expanding the capacity of its storage tanks? What is the reorder point? Situation B Advance Auto Parts Advance Auto purchases a component used in the manufacture of automobile generators directly from the supplier. Advance Auto’s generator production operation, which is operated at a constant rate will require 1000 components per month throughout the year (12,000 units annually). Assume the ordering costs are $25 per order, the unit cost is $2.50 per component, and annual holding costs are 20% of the value of the inventory. Advance Auto has 250 working days per year and a lead time of 5 days. Answer the following inventory policy questions: What is the EOQ for this component? What is the reorder point? What is the cycle time? What are the total annual holding and ordering costs associated with your recommended EOQ?

Mary is planning a study to see if learning of 6th graders on a math lesson is affected by background noise level. She wants to use a t-test for independent groups to analyze her results. The independent variable is background noise level. Condition A is no background noise and Condition B is background noise. The dependent variable is the math score that the 6th graders earned based on the math lesson.Measure of variable for the dependent element is the t-test. The t-test’s effect size complements its statistical significance, describing the magnitude of the difference, whether or not the difference is statistically significant. The degrees of freedom determines who well the t distribution approximates a normal distribution (Gravetter & Wallnau, 2013). The scale of measurement for the dependent variable of math scores is ratio as there is an absolute zero that is meaningful since the range of scores will vary from 0 to 100. Continuous data are numerical data that can theoretically be measured in infinitely small units and sometimes-continuous data are given discrete values at certain thresholds (Gravetter & Wallnau, 2013). The threshold for the math scores could be benchmark scores related to proficiency.Please respond to the above question using 250 words. Please also use at least 1 reference that is from a peer reviewed article or journal not a website reference. Please also cite the reference in APA 6th edition format.