A sample of 125 unemployed adults' high-school dropouts, 78% stated that they we regular consumers of alcoholic beverages. A 95 percent confidence interval for the population proportion of adults that were not consumers of alcoholic beverages is: ) (0.063 ,0.177) ) (0.113, 0.247) O (0.756, 0.924 )
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- Hi! help me with this please. TYSM! In a study by the United Dairy IndustryAssociation, 42% of 655 persons age 35–44 said theyseldom or never ate cottage cheese. For 455 individualsage 45–54, the corresponding percentage was 34%. At the0.01 level, can we reject the possibility that the populationpercentages could be equal for these two groups?) In the recent study, US graduates of for-profit higher institutions were between 4.8 and 6.7 percentage points more likely to ne unemployed than those at nonprofit institutions and community colleges. Determine the population, the sample, and population parameter of sample statistic. B) Explain the difference between Amelia making an 82 on her pre-calculus exam and scoring in the 82nd percentile in mathematics on the ACT test.Consider the following sample: 5.2,7.6,3.4,6.5,7.1 which is selected from r(a, ß). The method of moments estimator of a is: (c) 5.96 (a) 6.5 (b) 5.5 (d) 29.8 (e) None a b d e O
- The U.S. Department of Transportation, National Highway Traffic Safety Administration, reported that 77% of all fatally injured automobile drivers were intoxicated. A random sample of 52 records of automobile driver fatalities in a certain county showed that 33 involved an intoxicated driver. Do these data indicate that the population proportion of driver fatalities related to alcohol is less than 77% in Kit Carson County? Use ? = 0.05. (a) level of significance: .05 | H0: p = 0.77; H1: p < 0.77 (b) The standard normal, since np > 5 and nq > 5. What is the value of the sample test statistic? (Round your answer to two decimal places.) Find the P-value of the test statistic. (Round your answer to four decimal places.)36% of canadians are single and 20 % are corona infected whereas 12 % are single and corona infected. Given that a selected individual is married, the probabilty that he/ she is corona infected 0.750 0.125 0.250 0.8758.27 A random sample of 985 "likely voters"-those who are judged to be likely to vote in an upcoming election-were polled during a phone-athon conducted by the Republican Party. Of those contacted, 592 indicated that they intended to vote for the Republican running in the election. a b According to this study, the estimate for p, the proportion of all "likely voters" who will vote for the Republican candidate, is p = .601. Find a bound for the error of estimation. If the "likely voters" are representative of those who will actually vote, do you think that the Republican candidate will be elected? Why? How confident are you in your decision? Can you think of reasons that those polled might not be representative of those who actually vote in the election? c
- A scorlarship requires applicants to get a score at the 90th percentile or above on a certain standadized test in order to qualify. Angela gets a score of 177 out of 200 possible points on the test. Did Angela definitely qualify, definely not qualify, or is there not enough information to determine wheter or not she qualified? Explain.A random sample of 1026 adults in a certain large country was asked "Do you pretty much think televisions are a necessity or a luxury you could do without?" Of the 1026 adults surveyed, 533 indicated that televisions are a luxury they could do without. Complete parts (a) through (e) below. (a) Obtain a point estimate for the population proportion of adults in the country who believe that televisions are a luxury they could do without. A p= (Round to three decimal places as needed.)A medical researcher says that less than 82% of adults in a certain country think that healthy children should be required to be vaccinated. In a random sample of 300 adults in that country, 78% think that healthy children should be required to be vaccinated. At a = 0.10, is there enough evidence to support the researcher's claim? Complete parts (a) through (e) below. . More tnan % or aouts in the country think tnat neanny cniaren snouia de requirea to De vaccinatea. O D. % of adults in the country think that healthy children should be required to be vaccinated. Let p be the population proportion of successes, where a sucess is an adult in the country who thinks that healthy children should be required to be vaccinated. State Ho and H. Select the correct choice below and fill in the answer boxes to complete your choice. (Round to two decimal places as needed.) c. Ho:pz 0.82 H:p H ps OE Ho: p= d:"H OF. Ho: ps Hyip> OD. Ho: p< (b) Find the critical value(s) and identify the rejection…
- Suppose a random sample of n=60 college students were surveyed and r=11 of them said that blue is their favorite color. Use a=0.05. What is the value of the sample test statistic? Find the p value. 80% of all supermarketsprices end in the digit 9 or 5. Suppose a random sample of 116 items in a suoermarket find that 87 have prices that end in 9 or 5. Use a=0.05. What is the value of the sample test statistic? Find the p value.The school registrar estimates that the dropout rate of freshmen high schools in Valenzuela is 20%. Last year, 90 freshmen from a random sample of 500 Valenzuela freshmen high school withdrew. At 0.01, is there enough evidence to reject the registrar's claim?According to the Bureau of Transportation Statistics, on-time performance by airlines is described as follows: Action % of time On Time National Aviation System Delay Aircraft arriving late 71 9. 10 Other (weather and other conditions) 10 When a study was conducted it was found that of the 211 randomly selected flights, 150 were on time, 19 were a National Aviation System Delay, 21 arriving late , 21 were due to weather. Perform a test to see if there is sufficient evidence at a = 0.10 to see if these differ from the governments statistics. The correct hypotheses are: O Ho: The sample is a good fit to the Bureau of Transportation Statistics. HA: The sample is not a good fit to the Bureau of Transportation Statistics. (claim) O Ho: The sample is not a good fit to the Bureau of Transportation Statistics. HA: The sample is a good fit to the Bureau of Transportation Statistics. (claim) O Ho: The sample and the Bureau of Transportation Statistics are independent. HA: The sample and the…