Chapter 4: Q.13 (page 283)
Define the random variable .
Short Answer
The amount of community activities that Sam volunteers for in a month is defined as Random Variable.
Chapter 4: Q.13 (page 283)
Define the random variable .
The amount of community activities that Sam volunteers for in a month is defined as Random Variable.
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What is the probability the baker will sell more than one batch?
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 bag contains letter tiles. Forty-four of the tiles are vowels, and are consonants. Seven tiles are picked at random. You want to know the probability that four of the seven tiles are vowels. What is the group of interest, the size of the group of interest, and the size of the sample?
An intramural basketball team is to be chosen randomly from 15 boys and 12 girls. The team has ten slots. You want to know the probability that eight of the players will be boys. What is the group of interest and the sample?
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