The probability distribution of a random variable is: A) the degree to which the variable’s possible values are spread out. B) the possible values of the random variable and the frequency with which the variable takes each value. C) the possible values of the random variable.

Suppose that in a small village about 90% of the residents are of Hawaiian ancestry. Let n=1, 2, 3,… represent the number of people you must meet until you encounter the first person of Hawaiian ancestry in the village. Write the expression for the probability distribution of the random variable n.

All tractors made by a certain company are produced on one of three assembly lines, named Red, White, and Blue. The chances that the tractor will not start when it rolls off of a line are 6%, 11%, and 8% fors lines Red, White, and Blue, respectively. The percentages of all tractors produced on each line are: Red: 48% White: 31% Blue: 21% What is the probability that a tractor came off the White line, given that it wouldn't start? with tree diagrams

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Find the mean of the given probability distribution. A police department reports that the probabilities that 0,1,2 and 3 burglaries will be reported in a given day are 0.48,0.41,0.10,and 0.01 respectively.

A production process produces 2% defective parts. A sample of 5 parts from the production is selected. What is the probability that the sample contains exactly two defective parts?

The table shows the distribution, by age and gender, of the 28.5 million people in a certain region who live alone. Use the data in the table to find the probability that a randomly selected person in the region is a woman in the 18-24 age range living alone. Male Female Total Attempted Ages Ages Ages Ages Ages Ages 18-24 25-34 35-44 45-64 65-74 275 Total 0.9 2.3 2.4 0.7 1.5 1.2 1.6 3.8 3.6 4.6 1.4 1.5 4.8 6.3 5.0 2.2 9.6 3.6 BECER 13.1 15.4 28.5 The probability is (Type an integer or decimal rounded to the nearest hundredth as needed.)

Let X be the number of applicants who apply for a senior level position at a large multinational corporation. The probability distribution of the random variable X is given in the following table. The outcomes (number of applicants) are mutually exclusive. Complete the table by calculating the cumulative probability distribution of X. Probability distribution Cumulative probability distribution The probability that there will be at least two applicants is The probability that there will be three or four applicants is 0 0.45 Outcome (Number of applicants) 1 3 0.30 2 0.15 0.08 and the probability that there will be at most three applicants is 4 0.02

Dimensional characteristics, such as height, are an example of a:   a.   continuous random variable   b.   discrete random variable   c.   categorical random variable   d.   Any of the above

A vaccine has a 90% probability of being effective in preventing a certain disease. The probability of getting the disease if a person is not vaccinated is 50%. In a certain geographic region, 25% of the people get vaccinated. If a person is selected at random, what is the probability that he or she will contract the disease?