Assignment:
Sampling and Sampling Distribution
Question 1. Suppose you need to sample the concentration of a chemical in a production process that goes on continuously 24 hours per day, 7 days per week. You need to generate a random sample of six observations of the process over a period of one week. Use a computer, a calculator, or a random number table to generate the six observation times (to the nearest minute).
Question 2. When sampling is from a population with standard deviation σ = 55, using a sample size n = 150, what is the probability that X will be at least 8 units away from the population mean μ?
Question 3. Shimano mountain bikes are displayed in chic clothing boutiques in Milan, Italy, and the average price for the bike in the city is $700. Suppose that the standard deviation of bike prices is $100. If a random sample of 60 boutiques is selected, what is the probability that the average price for a Shimano mountain bike in this sample will be between $680 and $720.