Practice 20 questions on STAT130 - Statistics 130 at University of KwaZulu-Natal- Westville Campus. Free AI-generated quiz on uNotes — track your score, retake anytime.
Based on the provided data for Model B kettles, where the average boiling time is 1.95 minutes and the variance is 0.04, what is the calculated Coefficient of Variation (CV)?
2If a data set is bell-shaped with a mean of 11 and a standard deviation of 3, approximately what percentage of the data falls between the values of 5 and 17 according to the Empirical Rule?
3In a box plot, if the first quartile (Q1) is 60 and the third quartile (Q3) is 80, what is the Quartile Deviation?
4Which of the following properties is ALWAYS true for a Poisson distribution?
5If the average number of Brown trout in a lake is 0.1 per cubic metre, how many trout would you expect to find in a volume of 20,000 cubic metres?
6When tossing a fair coin 3 times, what is the total number of possible outcomes in the sample space?
7A survey of 124 girls produced a box plot where the third quartile (Q3) for weight is 80kg. If girls weighing over 80kg are considered overweight, approximately how many girls in this study are overweight?
8In a Binomial distribution experiment, what happens to the probability of success (p) as the number of trials (n) increases?
9Given a sample space S = {2, 3, 5, 7, 8, 10, 11, 12, 13, 15} and event B = {3, 10, 15}, what is the probability P(B)?
10In the context of the internet usage frequency table, if the 85th percentile is calculated as 'x' minutes, what does this value represent?
