AP Statistics Continuous Random Variables — practice questions
18 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice AP Statistics Continuous Random Variables in the app →For a continuous random variable, probability is represented by:The curve used to draw a continuous probability distribution is called the:Which symbol is used to represent the density curve?Area under the curve is given by which function?For a continuous random variable, the probability that x takes on any single value is:The heights of radish plants are given as an example of which kind of variable?Which three distributions are named for study in these chapters?The notation for the uniform distribution is written as:In the notation X ~ U(a, b), the letter a stands for:In the notation X ~ U(a, b), the letter b stands for:The probability P(c < x < d) is the area under the curve, above the x-axis, and:Calculations with the exponential distribution require knowledge of which quantity?In the customer-arrival example, time between customers is exponential with a mean of:The exponential distribution's memorylessness means past waiting time affects future waiting:Because P(x = c) is zero for a continuous variable, P(c < x < d) and P(c <= x <= d) are:If X ~ U(0, 10), the probability that x lies between 2 and 4 comes from the area that is:The pdf and the cdf differ in that the cdf gives:Finding the 90th percentile of a smiling-time distribution means finding the value below which lies: