Mathematics, 15.12.2021 17:10 reaganphelps3
A manufacturer of light bulbs advertises that, on average, its long-life bulb will last more than 4800 hours. To test this claim, a statistician took a random sample of 103 bulbs and measured the amount of time until each bulb burned out. The mean lifetime of the sample of bulbs is 4887 hours and has a standard deviation of 380 hours. Can we conclude with 90% confidence that the claim is true? Fill in the requested information below.
Answers: 1
Mathematics, 21.06.2019 19:00
Arestaurant chef made 1 1/2 jars of pasta sauce. each serving of pasta requires 1/2 of a jar of sauce. how many servings of pasta will the chef be bale to prepare using the sauce?
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Mathematics, 21.06.2019 20:00
Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39
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A manufacturer of light bulbs advertises that, on average, its long-life bulb will last more than 48...
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