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The lifetimes of lightbulbs of

A certain type of lightbulb is advertised to have an average lifetime of 1,000 hours. Assume the lifetimes of these lightbulbs
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2. asked by Kerry
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The distribution of lifetimes for a particular brand of lightbulbs has a mean of 110 hours and a standard deviation of 20 hours.
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2. asked by Ryan
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The lifetimes of lightbulbs of a particular type are normally distributed with a mean of 290 hoursand a standard deviation of 6
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2. asked by sally
3. 1,153 views
Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.Jaoquin buys 3 dozen
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2. asked by Anonymous ;)
3. 119 views
No idea how to do this. I looked in my book and there usually is a data set present to get the first, second and third quartile.
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2. asked by J
3. 644 views
The lifetimes of lightbulbs of a particular type are normally distributed with a mean of 241 hours and a standard deviation of
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2. asked by shameza
3. 1,015 views
Jaoquin Buys 3 dozen lightbulbs. After changing the lightbulbs in his house, He has 15 left over. How many lightbulbsdid he use?
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2. asked by MATHHELP ME PLZ!
3. 6,895 views
Please help me ASAP!1. What is the solution to 45 - (-60)? Show your work. 2. Order the following integers from least to
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2. asked by Anna P.
3. 729 views
Humberto builds two circuits using identical components.Circuit 1: A series circuit with three lightbulbs Circuit 2: A parallel
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2. 20 views
What is the approximate percentile rank of a lightbulb that failed at 9000 hours if the number of lightbulbs is 400? The number
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2. asked by alice
3. 477 views