Chapter 5: Q. 73 (page 352)
For each probability and percentile problem, draw the picture.
When age is rounded to the nearest year, do the data stay continuous, or do they become discrete? Why?
The data remains continuous because it cannot be approximated.
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Find the amount (percent of one gram) of carbon-14 lasting less than 5,730 years. This means, find P(x < 5,730).
a. Sketch the graph, and shade the area of interest
b. Find the probability. P(x < 5,730) = __________
Find the probability that x falls in the shaded area.
Use the following information to answer the next seven exercises. A distribution is given as . Find the 30th percentile
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.
What has changed in the previous two problems that made the solutions different?
Use the following information to answer the next eight exercises. A distribution is given as .
What isa? What does it represent?
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