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Probability

1.                   The number of hours needed by students in a science class to complete a research project was recorded with the following results:

hours Number of Students(freq)

0 - 14 2
15 - 29 4
30 - 44 10
45 - 59 16
60 - 74 6
75 - 89 2

A student is selected at random. Find the following probabilities.

a. The student took between 5 and 9 hours, inclusive.:
b. The student took at least 6 hours.
c. The student took less than 5 hours.

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Solution Summary

The solution provides step by step method for the calculation of probability using the Z score. Formula for the calculation and Interpretations of the results are also included.

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