Chapter 5: Q. 59 (page 351)
Use the following information to answer the next seven exercises. A distribution is given as . Draw the distribution.
Short Answer
The distribution can be drawn as
Chapter 5: Q. 59 (page 351)
Use the following information to answer the next seven exercises. A distribution is given as . Draw the distribution.
The distribution can be drawn as
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Get started for freeSuppose that the longevity of a light bulb is exponential with a mean lifetime of eight years. If a bulb has already lasted 12 years, find the probability that it will last a total of over 19 years.
The data that follow are the square footage (in 1,000 feet squared) of 28 homes.
The sample mean = 2.50 and the sample standard deviation = 0.8302. The distribution can be written as .
What is ?
Carbon-14 is a radioactive element with a half-life of about
5,730 years. Carbon-14 is said to decay exponentially. The decay rate is 0.000121. We start with one gram of carbon-14.
We are interested in the time (years) it takes to decay carbon-14. The distribution for X is ______.
A continuous probability function is restricted to the portion between x = 0 and 7. What is P(x = 10)?
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.
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