Calculus and Above

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A sample of 1500 computer chips revealed that 50% of the
A sample of 1500 computer chips revealed that 50% of the chips do not fail in the first 1000 hours of their use. The company's promotional literature claimed that over 47% do not fail in the first 100… read more
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A sample of 900 computer chips revealed that % of the chips
A sample of 900 computer chips revealed that 69% of the chips fail in the first 1000 hours of their use. The company's promotional literature claimed that below 72% fail in the first 1000 hours of the… read more
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Math A sample of 1800 computer chips revealed that 75% of
math A sample of 1800 computer chips revealed that 75% of the chips fail in the first 1000 hours of their use. The company's promotional literature states that 76% of the chips fail in the first 1000 … read more
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A sample of 1100 computer chips revealed that 57% of the
A sample of 1100 computer chips revealed that 57% of the chips fail in the first 1000 hours of their use. The company's promotional literature states that 59% of the chips fail in the first 1000 hours… read more
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A sample of 1300 computer chips revealed that 42% of the
A sample of 1300 computer chips revealed that 42% of the chips do not fail in the first 1000 hours of their use. The company's promotional literature claimed that above 39% do not fail in the first 10… read more
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A newsletter publisher believes that 38% of their readers own a laptop. Is there sufficient evidence at the 0.02 level to refute the publisher's claim? State the null and alternative hypotheses for th… read more
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A manufacturer of potato chips would like to know whether
A manufacturer of potato chips would like to know whether its bag filling machine works correctly at the 448 gram setting. Is there sufficient evidence at the 0.02 level that the bags are overfilled? … read more
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A genetic experiment involving peas yielded one sample of
A genetic experiment involving peas yielded one sample of offspring consisting of 416 green peas and 170 yellow peas. Use a 0.01 significance level to test the claim that under the same​ circumstances… read more
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A hospital director is told that 44% of the emergency room
A hospital director is told that 44% of the emergency room visitors are uninsured. The director wants to test the claim that the percentage of uninsured patients is more than the expected percentage. … read more
Sandhya_sharma
Master's Degree
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A newsletter publisher believes that below 68% of their
A newsletter publisher believes that below 68% of their readers own a Rolls Royce. Is there sufficient evidence at the 0.05 level to substantiate the publisher's claim?State the null and alternative h… read more
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Master's Degree
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The director of research and development is testing a new
The director of research and development is testing a new medicine. She wants to know if there is evidence at the 0.10 level that the medicine relieves pain in more than 350 seconds. After performing … read more
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Master's Degree
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The mayor of a town has proposed a plan for the construction
The mayor of a town has proposed a plan for the construction of an adjoining bridge. A political study took a sample of 1700 voters in the town and found that 66% of the residents favored construction… read more
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Master's Degree
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A manufacturer of chocolate chips would like to know whether
A manufacturer of chocolate chips would like to know whether its bag filling machine works correctly at the 440 gram setting. Is there sufficient evidence at the 0.05 level that the bags are overfille… read more
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Master's Degree
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A manufacturer of banana chips would like to know whether
A manufacturer of banana chips would like to know whether its bag filling machine works correctly at the 434 gram setting. Is there sufficient evidence at the 0.02 level that the bags are overfilled? … read more
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Master's Degree
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Assume that a simple random sample has been selected and
Assume that a simple random sample has been selected and test the given claim. Use the​ P-value method for testing hypotheses. Identify the null and alternative​ hypotheses, test​ statistic, P-value, … read more
Sandhya_sharma
Master's Degree
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1. Find the compliment of the claim. U>=256. Which is H0 and
1. Find the compliment of the claim. U>=256. Which is H0 and which is Ha? 2. A null and alternative hypothesis are given. Determine whether the hypothesis test is left tailed, right tailed, or two … read more
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Master's Degree
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9.3 If you use a 0.10 level of significance in a (two-tail)
9.3 If you use a 0.10 level of significance in a (two-tail) hypothesis test, what is your decision rule for rejecting a null hypothesis that the population mean is 500 if you use the Z test? 9.13 Do s… read more
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A PC manufacturer claims that no more than 2% of their machines
A PC manufacturer claims that no more than 2% of their machines are defective. In a random sample of 100 machines, it is found that 5% are defective. The manufacturer claims this is a fluke of the sam… read more
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