SOLUTION: The following table shows the distribution of the number of donations made by a class of students last month:
Number of donations made 1 2 3 4 5 6
Number of stude
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-> SOLUTION: The following table shows the distribution of the number of donations made by a class of students last month:
Number of donations made 1 2 3 4 5 6
Number of stude
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Question 1174964: The following table shows the distribution of the number of donations made by a class of students last month:
Number of donations made 1 2 3 4 5 6
Number of students 20 5 3 2 4 2
If a students is elected at random, find the probabilities of the following:
The student made more than 3 donations last month Answer by math_tutor2020(3816) (Show Source):
x = number of donations made
y = number of students
We have 2+4+2 = 8 students who made more than 3 donations. We find this by adding the values of y that correspond to x = 4, x = 5, x = 6; all of these x values are greater than 3 (to indicate more than 3 donations were made).
There are 20+5+3+2+4+2 = 36 students total.
The probability of getting a student who made more than three donations is therefore:
8/36 = (4*2)/(4*9) = 2/9
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