If the medical faculty has 584 students registered, calculate how many medical students would be part of the sample of 150.
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- The University of the East Europe is interested in the overall performance of its students in the academic year 2020/2021. There were 1460 students registered for this academic year. The University decides to select a sample of 150 students from each of the 5 faculties- Science, Medicine, Law, Social Science and Humanities in proportion to the number of students in each faculty.
iv). If the medical faculty has 584 students registered, calculate how many medical students would be part of the sample of 150.
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- Of 52 students, it was found that 15 were commuters. If one-quarter of the female students and one-third of the male students in the survey were commuters, then how many of males were surveyed?Suppose a veterinarian wants to estimate the difference between the proportion of cat owners who are single and the proportion of dog owners who are single. Of the pet owners that visit any of the veterinarian clinics in her city regularly, she identifies 3872 pet owners that exclusively have cats and 4108 pet owners that exclusively have dogs. From this list of pet owners, she surveys 158 randomly selected cat owners and 139 randomly selected dog owners and asks each of them if they are single or married. Her findings are summarized in the table. Population Populationdescription Samplesize Number of successes Sampleproportion 1 cat owners ?1=158 ?1=63 ?̂1=0.39873 2 dog owners ?2=139 ?2=52 ?̂2=0.37410 Calculate the upper and lower limits (bounds) for a large sample 90% ?‑confidence interval for the difference in two population proportions, ?1−?2. Give each of your answers with three decimal places of precision.A music professor offers his 40 students the option of coming to an additional rehearsal session theweek before their juries (musical final exams.) In order to decide whether these extra sessions actuallyhelp students, he keeps track of who attends them and compares their jury scores to those of students who did not schedule extra sessions. In this study, a difference was found between the scores of students who scheduled the extra sessions and those of students who didn't attend(higher average for students with extra sessions) A) Yes, becuase the study relied on a common final exam fro everyone B)No, because the students chose whether they attended the review session or not C) Yes becuase the study included both students who attned the review session and those who did not D)Yes, becuase the number of subjects in the study was large E)No, becuase the students in the study were not blinded
- Among college students, the proportion p who say they’re interested in their congressional district’s election results has traditionally been 65%. After a series of debates on campuses, a political scientist claims that the proportion of college students who say they’re interested in their district’s election results is more than 65%. A poll is commissioned, and 185 out of a random sample of 275 college students say they’re interested in their district’s election results. Is there enough evidence to support the political scientist's claim at the 0.10 level of significance?Perform a one-tailed test. Then complete the parts below.Carry your intermediate computations to three or more decimal places. (a) State the null hypothesis H0 and the alternative hypothesis H1. H0: H1: (b) Determine the type of test statistic to use. (c) Find the value of the test statistic. (Round to three or more decimal places.) (d) Find the p-value. (Round to…Among college students, the proportion p who say they’re interested in their congressional district’s election results has traditionally been 65% . After a series of debates on campuses, a political scientist claims that the proportion of college students who say they’re interested in their district’s election results is more than 65% . A poll is commissioned, and 194 out of a random sample of 275 college students say they’re interested in their district’s election results. Is there enough evidence to support the political scientist's claim at the 0.10 level of significance? Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places. (If necessary, consult a list of formulas.) (a) State the null hypothesis H0 and the alternative hypothesis H1 . H0: H1: (b) Determine the type of test statistic to use. ▼(Choose one) (c) Find the value of the test statistic. (Round…The University of the East Europe is interested in the overall performance of its students in the academic year 2020/2021. There were 1460 students registered for this academic year. The University decides to select a sample of 150 students from each of the 5 faculties- Science, Medicine, Law, Social Science and Humanities in proportion to the number of students in each faculty. i). Identify the population of interest for this scenario. iv). If the medical faculty has 584 students registered, calculate how many medical students would be part of the sample of 150.
- Among college students, the proportion p who say they’re interested in their congressional district’s election results has traditionally been 75%. After a series of debates on campuses, a political scientist claims that the proportion of college students who say they’re interested in their district’s election results is more than 75%. A poll is commissioned, and 210 out of a random sample of 260 college students say they’re interested in their district’s election results. Is there enough evidence to support the political scientist's claim at the 0.10 level of significance?Perform a one-tailed test. Then complete the parts below.Carry your intermediate computations to three or more decimal places. (If necessary, consult a list of formulas.) A. State the null hypothesis Hoand the alternative hypothesis H1 B. Find the critical value. (Round to three or more decimal places.) C. Is there enough evidence to support the political scientist's claim that the proportion of college students who…The University of the East Europe is interested in the overall performance of its studentsin the academic year 2020/2021. There were 1460 students registered for this academicyear. The University decides to select a sample of 150 students from each of the 5faculties- Science, Medicine, Law, Social Science and Humanities in proportion to thenumber of students in each faculty.Of the 1000 comparison school students in the sample, 290 had overslept and been late to class at least once at Follow-Up 2. Of the 1414 policy change school students in the sample, 283 had overslept and been late to class at least once at Follow-Up 2. Calculate the proportion of comparison school students in the sample who had overslept and been late to class at least once at Follow-Up 2 (), the proportion of policy change school students in the sample who had overslept and been late to class at least once at Follow-Up 2 (), and the difference in proportions (comparison – policy change). Be sure to show how you find the proportions. Use the Two-way Tables applet to create a distribution of 1000 simulated difference in proportions under the null hypothesis assumption. We will consider oversleeping and being late to class to be the “success” outcome and GroupA to be comparison school students. Remember that if you choose to change the column and row labels no spaces can be included in…
- Of the 1000 comparison school students in the sample, 290 had overslept and been late to class at least once at Follow-Up 2. Of the 1414 policy change school students in the sample, 283 had overslept and been late to class at least once at Follow-Up 2. Calculate the proportion of comparison school students in the sample who had overslept and been late to class at least once at Follow-Up 2 (), the proportion of policy change school students in the sample who had overslept and been late to class at least once at Follow-Up 2 (), and the difference in proportions (comparison – policy change). Be sure to show how you find the proportions.Of the 1000 comparison school students in the sample, 290 had overslept and been late to class at least once at Follow-Up 2. Of the 1414 policy change school students in the sample, 283 had overslept and been late to class at least once at Follow-Up 2. Calculate the proportion of comparison school students in the sample who had overslept and been late to class at least once at Follow-Up 2 (), the proportion of policy change school students in the sample who had overslept and been late to class at least once at Follow-Up 2 (), and the difference in proportions (comparison – policy change). Be sure to show how you find the proportions Use the Two-way Tables applet to create a distribution of 1000 simulated difference in proportions under the null hypothesis assumption. We will consider oversleeping and being late to class to be the “success” outcome and GroupA to be comparison school students. Remember that if you choose to change the column and row labels no spaces can be included in…A forester wanted to survey spruce trees on one face of a mountain in order to determine the percentage of spruce trees that were infested or were attacked by a very destructive insect known as the tomentosus. The forester obtained a map of the mountain and then subdivided the area of interest into 400 square grids with each square covering an area of 100 square metres. A simple random sample of 50 squares was selected, and for each selected square, the survey team determined the total number of spruce trees and the number of such trees that were infested or had been attacked by the tomentosus. What sampling design was used for this survey? If the tomentosus is believed to be evenly distributed throughout the face of this mountain, would you recommend this sampling design? Why or why not? If the tomentosus prefers to reside in regions of the mountain face with higher temperatures and hence lower elevations, would you recommend using a different sampling design? Explain your answer…