Chapter 5: Q.5.9 (page 346)
A continuous probability function is restricted to the portion between x = 0 and 7. What is P(x = 10)?
The value of the iszero.
Over 30 million students worldwide already upgrade their learning with Vaia!
All the tools & learning materials you need for study success - in one app.
Get started for free
Find the probability that x falls in the shaded area.
Use the following information to answer the next eleven exercises. The age of cars in the staff parking lot of a suburban college is uniformly distributed from six months (0.5 years) to 9.5 years.
Find the probability that a randomly chosen car in the lot was less than four years old;
a. Sketch the graph, and shade the area of interest.
b. Find the probability.
Use the following information to answer the next seven exercises. A distribution is given as . What is the cumulative distribution function?
Use the following information to answer the next eight exercises. A distribution is given as .
What is the theoretical mean?
Suppose that the length of long distance phone calls, measured in minutes, is known to have an exponential distribution with the average length of a call equal to eight minutes.
a. Define the random variable.= ________________.
b. Is continuous or discrete?
c. ________
d. ________
e.________
f. Draw a graph of the probability distribution. Label the axes.
g. Find the probability that a phone call lasts less than nine minutes.
h. Find the probability that a phone call lasts more than nine minutes.
i. Find the probability that a phone call lasts between seven and nine minutes.
j. If phone calls are made one after another, on average, what would you expect the total to be? Why?
What do you think about this solution?
We value your feedback to improve our textbook solutions.
