PLEASE ONLY ANSWER QUESTION D AND E! I HAVE SOLVED THE OTHERS!
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PLEASE ONLY ANSWER QUESTION D AND E! I HAVE SOLVED THE OTHERS! A university wants to renovate a ...
A confidence interval was used to estimate the proportion of students at Utah Valley University who commute from home to campus more than 10 miles a day. A random sample of 100 students generated the following 95% confidence interval: (0.588, 0.654). Using the information above, what size sample would be necessary to estimate the true proportion to within ± 0.06 using 95% confidence? 147 533 267 205
a)A university planner wants to determine the proportion of spring semester students who will attend summer school. Suppose the university would like a 0.90 probability that the sample proportion is within 0.195 or less of the population proportion.What is the smallest sample size to meet the required precision? (There is no estimation for the sample proportion.) (Enter an integer number.) b)A university planner wants to determine the proportion of spring semester students who will attend summer school. She surveys 31 current...
Long answer question [7 marks] The university would like to conduct a study to estimate the true proportion of all university students who have student loans. According to the study, in a random sample of 215 university students, 86 have student loans. (a) Construct a 95% confidence interval for estimating the true proportion of all university students who have student loans (2 marks) (b) Provide an interpretation of the confidence interval in part (a). (1mark) (c) Conduct an appropriate hypothesis...
Question 19 (5 points) A pollster wants to construct a 95% confidence interval for the proportion of adults who believe that economic conditions are getting better. A Gallup poll taken in July 2010 estimates this proportion to be 0.33. Using this estimate, what sample size is needed so that the confidence interval will have a margin of error of 0.039? Write only an integer as your answer. Your Answer: Answer Question 20 (5 points) A researcher wants to construct a...
Question 9 (1.5 points) A medical researcher wants to construct a 99% confidence interval for the proportion of knee replacement surgeries that result in complications. An article in the Journal of Bone and Joint Surgery suggested that approximately 8% of such operations result in complications. Using this estimate, what sample size is needed so that the confidence interval will have a margin of error of o.023 2 Write only an integer as your answer. Your Answer Answet Save Question 10...
please don't round mid calculation(: · Question 16 You want to obtain a sample to estimate a population proportion. At this point in time, you have no for the population proportion. You would like to be 90% confident that you esimate is within 0.05 of the true population proportion. How large of a sample size is required? Do not round mid-calculation. A group of researchers is interested in middle school students and their willingness to appear to stand out. A...
Need help with my statistics homework QUESTION 2 In a survey performed at the University, it was found that 46 out of 446 students interviewed believed that race and racism is an important issue. If we want to construct a 90% confidence interval for the true proportion of students who believe that race and racism is an important issue, what would be the margin of error? (express the result in percentage and round to the nearest tenth). QUESTION 3 In...
I am looking for help with the following question: In order to test whether students in a large State University have a certain genetic trait, an elaborate instrument has to be set up but the cost of testing additional subjects is not that expensive once the instrument is set up. From last year’s data, the proportion of students having that genetic trait was 0.28. To estimate this year’s proportion to within 0.02 by a 95% confidence interval, how many students...
12. You are a college student, and you have a friend at a rival university. The two of you compete in almost everything! One day, your friend boasted that students at her university are taller than the students at yours. You each gather a random sample of heights of people from your respective campuses. Your data are displayed below (units are inches). Your friend's data: (checksum: 1263.2) 70.9 74.4 63.2 71.4 67.4 73.6 71.4 63 69.8 75.5 68.3 68.1 71.4...
please show the steps and formulas needed in order to correctly answer each question. thank you in advance. 6) In a survey of 327 registered voters, 167 of them wished to see Mayor Waffleskate lose her next election. Find a point estimate for the proportion of registered voters who wish to see Mayor Waffleskate defeated 7) A survey of 800 women shoppers found that 17 % of them shop confidence interval for the true proportion of women shoppers who shop...