Students Who Major in Business It has been reported that 20.4% of incoming freshmen indicate that they will major in business or a related field. A random sample of 382 incoming college freshmen were asked their preference, and 107 replied that they were considering business as a major. Part: 0 / 2 Part 1 of 2 Estimate the true proportion of freshman business majors with 94% confidence. Round your answers to at least one decimal place. % < p
Q: The confidence level of a test
A: α denote the significance level of the test.
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Q: Students Who Major in Business It has been reported that 20.4% of incoming freshmen indicate that…
A: We have to construct ci.
Q: Home Internet Access In a recent year, a study found that 76% of adults ages 18-29 had internet…
A: Given: n = 190 X = 164 Formula Used: Confidence interval = p ± Z*p(1-p)n
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Q: Students Who Major in Business It has been reported that 20.4% of incoming freshmen indicate that…
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A: Obtain the 95% confidence interval to estimate the true proportion. The 95% confidence interval to…
Q: Home Internet Access In a recent year, a study found that 77% of adults ages 18–29 had internet…
A: Given data : Confidence level = 95% To Estimate the true proportion with 95% confidence.
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A:
Q: Home Internet Access In a recent year, a study found that 76% of adults ages 18–29 had internet…
A: We have given thatn = 190x = 167p̂ = x/n = 167/190 = 0.87895Confidence level (c) = 99% =…
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A: Obtain the 99% confidence interval for the true proportion. The 99% confidence interval for the true…
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Q: Students Who Major in Business It has been reported that 20.4% of incoming freshmen indicate that…
A: Given, The sample proportion is,
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Q: Home Internet Access In a recent year, a study found that 75% of adults ages 18-29 had internet…
A: Given, n= 188 Pr of undergraduate having internet access (p)=167/188=0.88829 q= 1-0.88829=0.11171
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- Question Help A credit score is used by credit agencies (such as mortgage companies and banks) to assess the creditworthiness of individuals. Values range from 300 to 850, with a credit score over 700 considered to be a quality credit risk. According to a survey, the mean credit score is 708.2. A credit analyst wondered whether high-income individuals (incomes in excess of $100,000 per year) had higher credit scores. He obtained a random sample of 30 high-income individuals and found the sample mean credit score to be 722.6 with a standard deviation of 81.4. Conduct the appropriate test to determine if high-income individuals have higher credit scores at the a = 0.05 level of significance. State the null and alternative hypotheses. H1: (Type integers or decimals. Do not round.) Identify the t-statistic. to = (Round to two decimal places as needed.) Identify the P-value. P-value =(Round to three decimal places as needed.) Make a conclusion regarding the hypothesis. V the null…Students Who Major in Business It has been reported that 20.4% of incoming freshmen indicate that they will major in business or a related field. A random sample of 360 incoming college freshmen were asked their preference, and 94 replied that they were considering business as a major. Estimate the true proportion of freshman business majors with 98% confidence. Round intermediate calculations to three decimal places and final answers to one decimal place. <%<p %Home Internet Access In a recent year, a study found that 75% of adults ages 18–29 had internet access at home. A researcher wanted to estimate the proportion of undergraduate college students (18–29 years) with access, so she randomly sampled 189 undergraduates and found that 164 had access. Estimate the true proportion with 90% confidence. Round intermediate answers to five decimal places. Round your final answer to one decimal place.
- BESTION 12 the study description below to answer the following questions. A research group is interested in the relationship between alcohol consumption and heart disease in American men over the age of 40 years old. The researchers randomly selected 1913 medical records of men who suffer from heart disease. The researchers reco did not drink, drank moderately, or drank heavily. They found that men who had heart disease tended to drink heavily. Identify the population for the study. Identify the sample for the study. or the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). C Paragraph Arial 10pt T V 10 1 T == al || 15 15 №² YQuestion Help Suppose that the proportion of investors who are risk-averse (that is, try to avoid risk in their investment decisions) is though to be at least 0.7. A financial advisor believes that the proportion is actually less than 0.7. A survey of 36 investors found that 24 of them were risk-averse. Formulate a one-sample hypothesis test for a proportion to test this belief. Determine the null hypothesis, Ho, and the alternative hypothesis, H1. Но- (Type integers or decimals. Do not round.)Question Help Use the sample data and confidence level given below to complete parts (a) through (d). A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n= 1017 and x = 524 who said "yes." Use a 99% confidence level. Click the icon to view a table of z scores. a) Find the best point estimate of the population proportion p. (Round to three decimal places as needed.) b) Identify the value of the margin of error E. E = (Round to three decimal places as needed.) c) Construct the confidence interval. OCursive Writing An article in the October 11, 2006, issue of the Washington Post claimed that 15% of high school students used cursive writing on the essay portion of the SAT exam in the academic year 2005-2006. Suppose that you want to design a study to estimate this proportion for the following year. a. How many essays would you need to sample to estimate this proportion to within +0.05 with 99% confidence? (Use the 2005- 2006 proportion as a reasonable starting guess for how the following year's proportion will turn out.) Round your answer to the nearest integer. Your sample size should be at least_____quest 22 1/2need help pleaseStudents Who Major in Business It has been reported that 20.4% of incoming freshmen indicate that they will major in business or a related field. A random sample of 205 incoming college freshmen were asked their preference, and 57 replied that they were considering business as a major. Part 1 of 2 Estimate the true proportion of freshman business majors with 97% confidence. Round your answers to at least one decimal place. %In a recent year, a study found that 76% of adults ages 18–29 had internet access at home. A researcher wanted to estimate the proportion of undergraduate college students (18–29 years) with access, so she randomly sampled 188 undergraduates and found that 160 had access. Estimate the true proportion with 99% confidence. Round intermediate answers to five decimal places. Round your final answer to one decimal place. question: ___%<p<___%Recommended textbooks for youMATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons IncProbability and Statistics for Engineering and th…StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage LearningStatistics for The Behavioral Sciences (MindTap C…StatisticsISBN:9781305504912Author:Frederick J Gravetter, Larry B. WallnauPublisher:Cengage LearningElementary Statistics: Picturing the World (7th E…StatisticsISBN:9780134683416Author:Ron Larson, Betsy FarberPublisher:PEARSONThe Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. FreemanIntroduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. FreemanMATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons IncProbability and Statistics for Engineering and th…StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage LearningStatistics for The Behavioral Sciences (MindTap C…StatisticsISBN:9781305504912Author:Frederick J Gravetter, Larry B. WallnauPublisher:Cengage LearningElementary Statistics: Picturing the World (7th E…StatisticsISBN:9780134683416Author:Ron Larson, Betsy FarberPublisher:PEARSONThe Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. FreemanIntroduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. Freeman