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Exercise 2: Show your work in detail In a survey to investigate if people believe the...
1. People were asked if there is solid evidence that the earth is getting warmer. Among...
1. People were asked if there is solid evidence that the earth is getting warmer. Among 1500 respondents, 22% said that there is not such evidence. Use a 0.95 confidence level (0.01 significance level) to test the claim that less than 25% of the population believes that there is not solid evidence that the earth is getting warmer. a) (1 pts)VERIFY the requirements are satisfied b) (1 pts)CLAIM: (IN WORDS) c) (1 pts)CLAIM: (IN EQUATION FORM) d) (1 pts)DETERMINE THE...
A poll was conducted to investigate opinions about global warming. The respondents who answered yes when...
A poll was conducted to investigate opinions about global warming. The respondents who answered yes when asked if there is solid evidence that the earth is getting warmer were then asked to select a cause of global warming. The results are given in the accompanying data table. Use a 0.01 significance level to test the claim that the sex of the respondent is independent of the choice for the cause of global warming. Do men and women appear to agree,...
1. When posed with the question "Do you believe the Loch Ness monster exists," out of...
1. When posed with the question "Do you believe the Loch Ness monster exists," out of 21,346 point) responses, 64% were "yes." Using a 0.01 significance level to test a claim that most people believe in the Loch Ness monster, a P-value of 0.0001 is found. State the initial conclusion and final conclusion of the claim. Reject the null hypothesis; there is sufficient evidence to support the claim that most people believe in the Loch Ness monster Reject the null...
A USA Today article claims that the proportion of people who believe global warming is a...
A USA Today article claims that the proportion of people who believe global warming is a serious issue is 0.55, but given the number of people you've talked to about this same issue, you believe it is different from 0.55. The hypotheses for this test are Null Hypothesis: p = 0.55, Alternative Hypothesis: p ≠ 0.55. You take a random sample and perform a hypothesis test, getting a p-value of 0.0165. What is the appropriate conclusion? Conclude at the 5%...
A survey of 61,649 people included several questions about office relationships. Of the respondents, 27.4% reported...
A survey of 61,649 people included several questions about office relationships. Of the respondents, 27.4% reported that bosses scream at employees. Use a 0.01 significance level to test the claim that more than 1/4 of people say that bosses scream at employees. How is the conclusion affected after learning that the survey is an online survey in which Internet users chose whether to respond? Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final...
In a USA Today survey, 510 people chose to respond to the following question that was...
In a USA Today survey, 510 people chose to respond to the following question that was posted on the USA Today website: “Should Americans replace passwords with biometric security (fingerprints, etc.)?” Among the respondents, 53% said “yes.” We want to test the claim that more than half of the population believes that passwords should be replaced with biometric security. 1.) Are any of the requirements for testing a claim about a population proportion violated? Can the methods of this section...
18. A researcher claims that more than 75% of the adults believe in global warming, Mimi conducte...
18. A researcher claims that more than 75% of the adults believe in global warming, Mimi conducted a survey on a random sample of 300 adults. The survey showed that 240 adults in the sample believe in global warming. Assume Mimi wants to use a 0.05 significance level to test the researcher's claim. (a) What is the appropriate hypothesis test to use for this analysis? Please identify and explain (b) Identify the null hypothesis and the alternative hypothesis. why it...
In a USA Today survey, 510 people chose to respond to the following question that was...
In a USA Today survey, 510 people chose to respond to the following question that was posted on the USA Today website: “Should Americans replace passwords with biometric security (fingerprints, etc.)?” Among the respondents, 53% said “yes.” We want to test the claim that more than half of the population believes that passwords should be replaced with biometric security. I really need a direct answer to a.) and b.) please. A.) Are any of the requirements for testing a claim...
A USA Today article claims that the proportion of people who believe global warming is a...
A USA Today article claims that the proportion of people who believe global warming is a serious issue is 0.73, but given the number of people you've talked to about this same issue, you believe it is different from 0.73. The hypotheses for this test are Null Hypothesis: p = 0.73, Alternative Hypothesis: p ≠ 0.73. If you randomly sample 21 people and 12 of them believe that global warming is a serious issue, what is your test statistic and...
An online poll asked: "Do you believe the Loch Ness monster exists?" Among 20,599 responses, 63%...
An online poll asked: "Do you believe the Loch Ness monster exists?" Among 20,599 responses, 63% were "yes." Use a 0.10 significance level to test the claim that most people believe that the Loch Ness monster exists. How is the conclusion affected by the fact that Internet users who saw the question could decide whether to respond? Identify the null and alternative hypotheses for this test. Choose the correct answer below. O A. Ho: p = 0.5 H:p>0.5 OB. Ho:p>...
1. People were asked if there is solid evidence that the earth is getting warmer. Among 1500 respondents, 22% said that there is not such evidence. Use a 0.95 confidence level (0.01 significance level) to test the claim that less than 25% of the population believes that there is not solid evidence that the earth is getting warmer. a) (1 pts)VERIFY the requirements are satisfied b) (1 pts)CLAIM: (IN WORDS) c) (1 pts)CLAIM: (IN EQUATION FORM) d) (1 pts)DETERMINE THE...
1. When posed with the question "Do you believe the Loch Ness monster exists," out of 21,346 point) responses, 64% were "yes." Using a 0.01 significance level to test a claim that most people believe in the Loch Ness monster, a P-value of 0.0001 is found. State the initial conclusion and final conclusion of the claim. Reject the null hypothesis; there is sufficient evidence to support the claim that most people believe in the Loch Ness monster Reject the null...
18. A researcher claims that more than 75% of the adults believe in global warming, Mimi conducted a survey on a random sample of 300 adults. The survey showed that 240 adults in the sample believe in global warming. Assume Mimi wants to use a 0.05 significance level to test the researcher's claim. (a) What is the appropriate hypothesis test to use for this analysis? Please identify and explain (b) Identify the null hypothesis and the alternative hypothesis. why it...
An online poll asked: "Do you believe the Loch Ness monster exists?" Among 20,599 responses, 63% were "yes." Use a 0.10 significance level to test the claim that most people believe that the Loch Ness monster exists. How is the conclusion affected by the fact that Internet users who saw the question could decide whether to respond? Identify the null and alternative hypotheses for this test. Choose the correct answer below. O A. Ho: p = 0.5 H:p>0.5 OB. Ho:p>...
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