Chapter 4: Q.11 (page 282)
Construct a probability distribution table for the data.
Short Answer
The following is the probability distribution table for random
variable .
Chapter 4: Q.11 (page 282)
Construct a probability distribution table for the data.
The following is the probability distribution table for random
variable .
All the tools & learning materials you need for study success - in one app.
Get started for freeConstruct a PDF table.
= _______
The literacy rate for a nation measures the proportion of people age 15 and over who can read and write. The literacy rate for women in Afghanistan is 12%. Let X = the number of Afghani women you ask until one says that she is literate.
a. What is the probability distribution of X?
b. What is the probability that you ask five women before one says she is literate?
c. What is the probability that you must ask ten women?
d. Find the (i) mean and (ii) standard deviation of X.
A hospital researcher is interested in the number of times the average post-op patient will ring the nurse during a 12-hour shift. For a random sample of 50 patients, the following information was obtained. Let X = the number of times a patient rings the nurse during a 12-hour shift. For this exercise, x = 0, 1, 2, 3, 4, 5. P(x) = the probability that X takes on value x. Why is this a discrete probability distribution function (two reasons)?
A gross of eggs contains 144 eggs. A particular gross is known to have 12 cracked eggs. An inspector randomly chooses 15 for inspection. She wants to know the probability that, among the 15, at most three are cracked. What is X, and what values does it take on?
What do you think about this solution?
We value your feedback to improve our textbook solutions.