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The life of light bulbs is distributed normally. The standard deviation of the lifetime is 20 hours and the mean lifetime of a bulb is 600 hours. Find the probability of a bulb lasting for at most 630
asked
Jul 13, 2023
Mathematics
college
1
answer
24
votes
164k
views
Which substance is carried to the muscles
asked
Mar 18, 2023
Biology
college
1
answer
38
votes
158k
views
Vinnie is 18 years old.What type of number is Vinnie's age? Is it Rational or Irrational?
asked
Jan 14, 2023
Mathematics
college
2
answers
6
votes
405k
views
Which invention by ancient Romans was most important to their civilization?
asked
Nov 25, 2022
History
college
1
answer
22
votes
101k
views
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