Question 6: UPS believes it's workers can, on average, fill a shipping container 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% confidence interval. Interpret what this means in plain English. b. Test their claim with 99% confidence. Explain all your steps. Question 7: Amazon.com believes it takes 25 seconds to fill 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% confidence interval. Interpret what this means in plain English. b. Test their claim with 95% confidence. 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% confidence interval. Interpret what this means in plain English. b. Test their claim with 90% confidence. Explain all your steps