-Find the correct null hypothesis and for each correct alternative hypothesis 1. Suppose a pollster claims that the percentage of the population registering Democrat is .55 but you believe the percentage is actually less than that. What are your null and alternative hypotheses?
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A: It is given that The probability that more than 260 people voted for the referendum is 0.0898.
Q: State the null and the alternative hypotheses
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Q: Exit polling is a popular technique used to determine the outcome of an election prior to results…
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Q: A decade-old study found that the proportion of high school seniors who felt that "getting rich" was…
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A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…
Q: A decade-old study found that the proportion of high school seniors who felt that "getting rich" was…
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Q: You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is…
A: (b) State the hypotheses.
Q: Exit polling is a popular technique used to determine the outcome of an election prior to results…
A: Given that the population proportion is p=0.49. The sample size is n=200. The number of successes is…
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Q: you did not answer this Let p be the true proportion of firms with a chief marketing officer…
A: We have given thatp0 = 56% = 0.56n = 53x = 28p̂ = x/n = 28/53 = 0.5283Significance level (α) = 0.01
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- Exit polling is a popular technique used to determine the outcome of an election prior to results being tallied. Suppose a referendum to increase funding for education is on the ballot in a large town (voting population over 100,000). An exit poll of 300 voters finds that 159 voted for the referendum. How likely are the results of your sample if the population proportion of voters in the town in favor of the referendum is 0.49? Based on your result, comment on the dangers of using exit polling to call elections. How likely are the results of your sample if the population proportion of voters in the town in favor of the referendum is 0.49? The probability that more than 159 people voted for the referendum is ___. (Round to four decimal places as needed.)A dental assistant is interested in the proportion of patients that need a root canal. Let the proportion of patients that need a root canal be p. If the dental assistant wanted to know if the proportion of patients that need a root canal is more than 20%, what are the null and alternative hypotheses? Select the correct answer below: H0: p=0.20; Ha: p<0.20 H0: p>0.20; Ha: p=0.20 H0: p=0.20; Ha: p>0.20 H0: μ=0.20; Ha: μ>0.20conclude? do not own cars. What are the hypotheses and what do you sample of 144 employees and 6.14 A canning company agrees with their supplier of canning watermelons that a rate of 6% spoiled melons at the loading platform is reasonable. When the cannery takes a sample of 100 melons from a truckload delivered by the supplier and finds at least eight of them are defective, then the cannery returns the whole shipment. In your opinion was this a reasonable action? a. What is the decision rule that should be used? b. What is the probability of the Type I error? c. Explain the meaning of Type I and Type II errors in economic terms as they would be seen by each of the two parties, the canning company and the supplier.
- A researcher is wondering whether the drinking habits of adults in a certain region of a country are different than those in the general adult population. Suppose a recent study states that the proportion of adults in the general population who reported drinking once a week or less in the last month is 0.26. The null hypothesis for this test is p = 0.26 and the alternative hypothesis is p+ 0.26. The researcher collected data from 150 surveys he handed out at a busy park located in the region. Are the conditions for proceeding with a one-proportion z-test satisfied? If not, which condition is not satisfied? O a. Conditions are not satisfied; the researcher did not collect a random sample. O b. Conditions are not satisfied; the population of interest is not large enough to assume independence. Oc. Conditions are not satisfied; the sample size is not large enough. O d. All conditions are satisfied.Exit polling is a popular technique used to determine the outcome of an election prior to results being tallied. Suppose a referendum to increase funding for education is on the ballot in a large town (voting population over 100,000). An exit poll of 300 voters finds that 147 voted for the referendum. How likely are the results of your sample if the population proportion of voters in the town in favor of the referendum is 0.51? Based on your result, comment on the dangers of using exit polling to call elections. How likely are the results of your sample if the population proportion of voters in the town in favor of the referendum is 0.51? The probability that fewer than 147 people voted for the referendum is (Round to four decimal places as needed.)Exit polling is a popular technique used to determine the outcome of an election prior to results being tallied. Suppose a referendum to increase funding for education is on the ballot in a large town (voting population over 100,000). An exit poll of 200 voters finds that 106 voted for the referendum. How likely are the results of your sample if the population proportion of voters in the town in favor of the referendum is 0.49? Based on your result, comment on the dangers of using exit polling to call elections. How likely are the results of your sample if the population proportion of voters in the town in favor of the referendum is 0.49? The probability that more than 106 people voted for the referendum is 0.12890.1289. (Round to four decimal places as needed.)
- A decade-old study found that the proportion of high school who felt that ‘getting rich was an important personal goal was 75%. Suppose that we have reason to believe that this proportion has changed., and we wish to carry out a hypothesis test to see if our belief can be supported. State the thanks hypothesis H0 and the alternative H1 that we would use for this test.Suppose you want to test the claim that a population mean equals 34. (a) State the null hypothesis. H0: μ > 34H0: μ < 34 H0: μ = 34H0: μ ≠ 34H0: μ ≥ 34 (b) State the alternate hypothesis if you have no information regarding how the population mean might differ from 34. H1: μ > 34H1: μ < 34 H1: μ = 34H1: μ ≠ 34H1: μ ≥ 34 (c) State the alternative hypothesis if you believe (based on experience or past studies) that the population mean may exceed 34. H1: μ > 34H1: μ < 34 H1: μ = 34H1: μ ≠ 34H1: μ ≥ 34 (d) State the alternative hypothesis if you believe (based on experience or past studies) that the population mean may be less than 34. H1: μ > 34H1: μ < 34 H1: μ = 34H1: μ ≠ 34H1: μ ≥ 34A sociologist wants to study what proportion of people have significant relationship problems due to financial stress. A previous study she is aware of estimated it to be 32% but she believes this has increased in modern times. She collects a random sample of 150 people and 63 of them report relationship problems due to financial stress. Conduct an appropriate hypothesis test in questions #22-#25. Compute the Z-score for this hypothesis test and round to two decimal places. z = 1.58 z = 2.06 z = 2.63 z = 0.84
- Exit polling is a popular technique used to determine the outcome of an election prior to results being tallied. Suppose a referendum to increase funding for education is on the ballot in a large town (voting population over 100,000). An exit poll of 300 voters finds that 153 voted for the referendum. How likely are the results of your sample if the population proportion of voters in the town in favor of the referendum is 0.49? Based on your result, comment on the dangers of using exit polling to call elections. Question content area bottom Part 1 How likely are the results of your sample if the population proportion of voters in the town in favor of the referendum is 0.49? The probability that more than 153 people voted for the referendum is enter your response here. (Round to four decimal places as needed.) Part 2 Comment on the dangers of using exit polling to call elections.16You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is significantly different from 54% at a level of significance of a = 0.05. According to your sample, 33 out of 56 potential voters prefer the Democratic candidate. a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ? Select an answer ✓ (please enter a decimal) H₁: ? Select an answer ✓ (Please enter a decimal) (please show your answer to 3 decimal places.) c. The test statistic?v= d. The p-value = e. The p-value is ? ✓ a (Please show your answer to 4 decimal places.)
