Practice 10 questions on STTN111 - Introduction to Statistics at North-West University. Free AI-generated quiz on uNotes — track your score, retake anytime.
1A chef is deciding the order in which to serve three different pizzas: Hawaiian (H), Regina (R), and Margherita (M). Which set represents the complete sample space (Ω) of all possible serving orders?
2If three pizzas (Hawaiian, Regina, Margherita) are served in a random order, what is the probability that the Margherita is served before the Hawaiian?
3For a continuous random variable X with a probability density function f(x), which of the following statements is correct?
4If Z follows a standard normal distribution Z ~ N(0,1), what is the probability P(Z < 1.05)?
5Suppose X is normally distributed with a mean of 36 and a standard deviation of 8. Determine the probability P(X < 30).
6A random variable X is normally distributed with a mean of 50 and a variance of 16. What is the probability P(X > 52)?
7Which of the following statements most accurately summarizes the Central Limit Theorem?
8If Z is standard normally distributed, which of the following properties of probability is true?
9In the context of data collection and questionnaire design, which of the following is considered an unethical or poor practice?
10Which of the following is NOT a method of data collection for sample surveys?
