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
R.R. Jha
Bachelor's Degree
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A publisher reports that 31% of their readers own a
A publisher reports that 31% of their readers own a particular make of car. A marketing executive wants to test the claim that the percentage is actually more than the reported percentage. A random sa… read more
Neo
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Math A publisher reports that 79% of their readers own a
math A publisher reports that 79% of their readers own a laptop. A marketing executive wants to test the claim that the percentage is actually more than the reported percentage. A random sample of 200… read more
Ann
Tutor
MSC Mathematics
5,004 satisfied customers
Math A publisher reports that 31% of their readers own a
math A publisher reports that 31% of their readers own a particular make of car. A marketing executive wants to test the claim that the percentage is actually more than the reported percentage. A rand… read more
Kofi
PhD in Statistics
Ph.D.
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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
Ann
Tutor
MSC Mathematics
5,004 satisfied customers
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
Ann
Tutor
MSC Mathematics
5,004 satisfied customers
Math A publisher reports that 54% of their readers own a
math A publisher reports that 54% of their readers own a personal computer. A marketing executive wants to test the claim that the percentage is actually above the reported percentage. A random sample… read more
Ann
Tutor
MSC Mathematics
5,004 satisfied customers
Math A publisher reports that 46% of their readers own a
math A publisher reports that 46% of their readers own a particular make of car. A marketing executive wants to test the claim that the percentage is actually more than the reported percentage. A rand… read more
Ann
Tutor
MSC Mathematics
5,004 satisfied customers
Math A publisher reports that 27% of their readers own a
math A publisher reports that 27% of their readers own a personal computer. A marketing executive wants to test the claim that the percentage is actually above the reported percentage. A random sample… read more
Ann
Tutor
MSC Mathematics
5,004 satisfied customers
A newsletter publisher believes that 67% of their readers own a Rolls Royce. Is there sufficient evidence at the 0.05 level to refute the publisher's claim? State the null and alternative hypotheses f… read more
Neo
13,852 satisfied customers
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
Neo
13,852 satisfied customers
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
Neo
13,852 satisfied customers
A sample of 900 computer chips revealed that 34% of the
A sample of 900 computer chips revealed that 34% of the chips do not fail in the first 1000 hours of their use. The company's promotional literature claimed that more than 31% do not fail in the first… read more
Neo
13,852 satisfied customers
The mayor of a town has proposed a plan for the annexation
The mayor of a town has proposed a plan for the annexation of an adjoining bridge. A political study took a sample of 1000 voters in the town and found that 29% of the residents favored annexation. Us… read more
Sandhya_sharma
Master's Degree
Master's Degree
5,309 satisfied customers
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
Sandhya_sharma
Master's Degree
Master's Degree
5,309 satisfied customers
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
Sandhya_sharma
Master's Degree
Master's Degree
5,309 satisfied customers
A courier service company wishes to estimate the proportion
A courier service company wishes to estimate the proportion of people in various states that will use its services. Suppose the true proportion is 0.06.If 333 are sampled, what is the probability that… read more
Sandhya_sharma
Master's Degree
Master's Degree
5,309 satisfied customers
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
Sandhya_sharma
Master's Degree
Master's Degree
5,309 satisfied customers
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