probability
Find the probability of:
a) Marks between 74%and 85%
b) Less than 74%.
unit 1 2 3 4 5
% of marks 58 74 76 62 85
Answers
Answer:
a. 75/100 and 85/100
10/100
1/100
Given : % marks in Different test unit 1 2 3 4 5 , % of marks 58 74 76 62 85
To find : probability of: a) Marks between 74%and 85% , b) Less than 74%.
Solution:
unit % of marks
1 58
2 74
3 76
4 62
5 85
Total Test = 5
Marks between 74 % & 85 % are 76 only ( if both not included )
probability of: a) Marks between 74%and 85% (74 , 85 excluded) = 1/5
Marks between 74 % & 85 % are 74, 76 * 85 ( if both included )
probability of: a) Marks between 74%and 85% ( 74 , 85 included) = 3/5
Less than 74%. are 58 & 62
probability of: b) Less than 74%. = 2/5
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