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The manager of Human Resources in a company has information about the accidents at work during one month. He created the following probability distribution:
Number of accidents
Probability
0
0.27
1
0.23
2
0.17
3
0.12
4
0.09
5
0.07
6
0.05
a. Calculate the mean, variance and standard deviation
b. Interprete the results
c. Create the graph that represents the probability distribution.
Suppose that two of her friends (of the 14 of either gender) do not like each other. If one of the two is invited, the other will not come to the party. How many ways are there to invite 8 people to the party. Explain.
Sketch a scale diagram of both radar contacts, a and b, how far is b from a and ct what heading relative to north is contact a from contact b?
A sample of 64 statistics students at a small college had a mean mathematics ACT score of 28 with a standard deviation of 4. Estimate the mean mathematics ACT score for all statistics students at this college. Give the 95% confidence interval.
Apply Chi Square test of independence to test whether there exists any association between two variables.
Choose h and k such that the system has (a) no solution, (b) a unique solution and (c) many solutions.
Graph the revenue and cost equations on the same axes
Determine an equation for the right bisector of the line segment with endpoints P(-5,-2) and Q(3,6)
sequences are among the oldest objects of mathematical investigation having been studied for over 3500 years.
Musical styles other than rock and pop are becoming more popular. A survey of college students finds that 50% like country music, 30% like gospel music, and 15% like both.
Although his height is only 5 ft 7 in., Spud Webb, formerly of the Sacramento Kings, had a vertical leap of about 44 in. What is his hang time?
Hungry bugs. If it takes a colony of termites one day to devour a block of wood that is 2 inches wide, 2 inches long, and 2 inches high, then how long will it take them to devour a block of wood that is 4 inches wide,
Two sides of an isoceles triangle each measure 10 cm, and the vertex angle measures 132 degrees, Find the length of the altitude to the base. Find the length of the base.
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