Answer:
percentage of lightbulb replacement requests = 34.15 %
Step-by-step explanation:
According to Empirical Rule
interval %
μ ± σ 55 ± 4 ( 51 ; 59 ) 68.3
As the question is a percentage between 55 and 51
or between 51 and μ - σ by symmetry is 68.3/2
% of lightbulb replacement requests = 34.15 %
Answer:
Step-by-step explanation:
Let the outcome from the two dice be (x,y) where x is the outcome from the red die and y is the outcome from the green die.
Event A: the red die shows 2
Event B: the numbers add to 5
Event C: at least one of the numbers is 2;
Event D: the numbers do not add to 9;
Therefore:
Answer:
r=28.27 cm aprox
Step-by-step explanation:
Well you know that the area of a circle is A= so
2511= so
=2511/
r=28.27 cm aprox
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