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Suppose a brand of lightbulbs is even distributed, with a mean life of 1,300hr and a standard deviation of 100h. What is the probability that a light bulb of that brand would last between 1180 and 1480 hr

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Suppose a brand of lightbulbs is even distributed, with a mean life of 1,300hr and a standard deviation of 100h. What is the probability that a light bulb of that brand would last between 1180 and 1480 hr

 
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I caught 57 fish. The following provides information about the kind and number of fish caught. Determine the empirical probability that the next fish is a shark: Grouper 14; Shark 19; Flounder 7, Kingfish17

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I caught 57 fish. The following provides information about the kind and number of fish caught. Determine the empirical probability that the next fish is a shark: Grouper 14; Shark 19; Flounder 7, Kingfish17

 
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If I had 7 different CD Players, 9 different receivers, and 10 different speakers, assuming a sound system consists of one of each, how many different sound systems could I advertise

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If I had 7 different CD Players, 9 different receivers, and 10 different speakers, assuming a sound system consists of one of each, how many different sound systems could I advertise

 
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I have $5,000 to invest. If the CD earns for and the savings bond earns 7%, how much did I invest in each? The interest after 1 year was $300

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I have $5,000 to invest. If the CD earns for and the savings bond earns 7%, how much did I invest in each? The interest after 1 year was $300

 
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