two pirate ships leave the same port at the same time. The first ship travels due North at a constant speed while the second shi
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It ΔABC and ΔXYZ are similar, then the sides of the triangles are in proportion.
We have BC = 8, AC = 7, Y = 28, XZ = 49 and YZ = 56. Substitute:
Complete question:
A manufacturer has determined that a model of its washing machine has an expected life that is Exponential with a mean of four years to failure and irrelevant board burn-in period. He wants to testthe system and complete data collection. Find the probability that one of these washing machines will have a life that ends: (Note you can find the reliability of the washing machine life)
a) After an initial four years of washing machine service
b) Before four years of washing machine service are completed
c) Not before six years of washing machine service.
Answer:
a) 0.3679
b) 0.6321
c) 0.2231
Step-by-step explanation:
Given:
Mean, u= 4
/\ = 1/u
= 1/4 = 0.25
The cummulative distribution function, will be:
For x≥0,
a) After an intial four years:
P(x>4) = 0.3679
b) Before four years:
P(x<4) = 0.6321
c) Not before 6 years:
P(x>6) = 0.2231