QuestionQuestion 6: UPS believes it’s workers can, on average, ll a shippingcontainer in 60 minutes. Suppose you take a random sample of 100 shipping containers. The sample mean is 62 minutes and the standard deviation is 5 minutes.a. Create a 90% condence interval. Interpret what this means in plain English.b. Test their claim with 99% condence. Explain all your steps.Question 7: Amazon.com believes it takes 25 seconds to ll an order. A random sample of 36 orders is taken. The mean is 32 seconds and the standard deviation is 3 seconds.a. Create a 99% condence interval. Interpret what this means in plain English.b. Test their claim with 95% condence. Explain all your steps.Question 8: Starbucks believes the espresso machines last 5 years. They take a sample of 25. There is a mean of 4 years with a standard deviation of 1.2 years.a. Create a 95% condence interval. Interpret what this means in plain English.b. Test their claim with 90% condence. Explain all your steps.MathStatistics and Probability ECO 240
