Final answer:
The high school level Mathematics and involves statistical analysis and probability calculations, such as determining percentiles, calculating probabilities, and computing averages for various scenarios.
Step-by-step explanation:
Calculating the time a CPU remains idle, finding probabilities, and computing averages based on data collected. To determine the maximum number of hours per day that the bottom quartile of households uses a personal computer for entertainment, we would need to collect data on computer usage and then determine the 25th percentile value. Similarly, to find the probability that a household personal computer is used for entertainment between 1.8 and 2.75 hours per day, we need to understand the distribution of the computer usage times and apply the appropriate probability models.
Uniform distribution, average energy use, and frequency are essential in understanding the types of calculations needed to answer these questions. For example, the statement regarding the time waited for a rural bus is uniformly distributed indicates that any time within the given range is equally likely.