A local police chief claims that about 26% of all drug related arrests are ever prosecuted....
A local police chief claims that about 26% of all drug related arrests are ever prosecuted. A sample of 700 arrests shows that 30% of the arrests were prosecuted. Is there sufficient evidence at the 0.05 level to refute the chief's claim? State the null and alternative hypotheses for the above scenario.
H 0:
Ha:
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A local police chief claims that about 26% of all drug related
arrests are ever prosecuted....
A local police chief claims that 66% 66 % of all drug-related arrests are never prosecuted....
A local police chief claims that 66% 66 % of all drug-related arrests are never prosecuted. A sample of 700 700 arrests shows that 63% 63 % of the arrests were not prosecuted. Using this information, one officer wants to test the claim that the number of arrests that are never prosecuted is under what the chief stated. Is there enough evidence at the 0.02 0.02 level to support the officer's claim? State the null and alternative hypotheses. Find the...
A local police chief claims that 42% of all drug-related arrests are never prosecuted. A sample...
A local police chief claims that 42% of all drug-related arrests are never prosecuted. A sample of 600 arrests shows that 38% of the arrests were not prosecuted. Using this information, one officer wants to test the claim that the number of arrests that are never prosecuted is less than what the chief stated. Is there enough evidence at the 0.02level to support the officer's claim? Step 1 of 7: 1.State the null and alternative hypotheses. 2.Find the value of...
A newsletter publisher believes that 55% of their readers own a personal computer. Is there sufficient...
A newsletter publisher believes that 55% of their readers own a personal computer. Is there sufficient evidence at the 0.05 level to refute the publisher's claim? State the null and alternative hypotheses for the above scenario.
3. A manufacturing company that produces shafts claims that one of the machined shafts has a...
3. A manufacturing company that produces shafts claims that one of the machined shafts has a diameter variance no larger than 0.0002 in'. A random sample of 10 shafts is collected and measured resulting in a sampled variance of 0.0003 in'. Assuming normality in the diameter measurements, is there significant evidence to refute the company's claim? Use a level of significance a = 0.05. Start your solution by clearly stating the null and alternative hypotheses, show all your calculations and...
A newsletter publisher believes that 38% of their readers own a personal computer. Is there sufficient...
A newsletter publisher believes that 38% of their readers own a personal computer. Is there sufficient evidence at the 0.10 level to refute the publisher's claim? State the null and alternative hypotheses for the above scenario.
A newsletter publisher believes that 32% of their readers own a Rolls Royce. Is there sufficient...
A newsletter publisher believes that 32% of their readers own a Rolls Royce. Is there sufficient evidence at the 0.02 level to refute the publisher's claim? State the null and alternative hypotheses for the above scenario.
The mayor of a town believes that 55% of the residents favor annexation of a new...
The mayor of a town believes that 55% of the residents favor annexation of a new community. Is there sufficient evidence at the 0.05 level to dispute the mayor's claim? State the null and alternative hypotheses for the above scenario. The mayor of a town believes that more than 46% of the residents favor construction of a new bridge. Is there sufficient evidence at the 0.05 level to support the mayor's claim? State the null and alternative hypotheses for the...
A newsletter publisher believes that more than 34% of their readers own a personal computer. Is...
A newsletter publisher believes that more than 34% of their readers own a personal computer. Is there sufficient evidence at the 0.05 level to substantiate the publisher's claim? State the null and alternative hypotheses for the above scenario. Ho: = Ha: =
its claimed that the mean tenure for the chief of police was at least 9 years....
its claimed that the mean tenure for the chief of police was at least 9 years. A survey of metropolitan police departments found a sample tenure of years for the chief of police position with a ?=7.27standard deviation of s=6.38 years. a.What are the null and alternative hypotheses that are needed to challenge the validity of the claim? b.If 85 companies were included in the sample what is the p-value for the hypothesis test? c.At the level =0.01, what is...
For the following questions, refer to the following scenario: The local police chief started a “crimeline”...
For the following questions, refer to the following scenario: The local police chief started a “crimeline” program some years ago and wonders if it’s really working. The program publicizes unsolved violent crimes in the local media and offers cash rewards for information leading to arrests. The police chief wants to know: Is there a difference in the arrest rate for crimes that are publicized compared to those that are not? Results from random samples of both types of crimes are...
3. A manufacturing company that produces shafts claims that one of the machined shafts has a diameter variance no larger than 0.0002 in'. A random sample of 10 shafts is collected and measured resulting in a sampled variance of 0.0003 in'. Assuming normality in the diameter measurements, is there significant evidence to refute the company's claim? Use a level of significance a = 0.05. Start your solution by clearly stating the null and alternative hypotheses, show all your calculations and...
A newsletter publisher believes that 32% of their readers own a Rolls Royce. Is there sufficient evidence at the 0.02 level to refute the publisher's claim? State the null and alternative hypotheses for the above scenario.
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