In a survey of 2270 adults, 739 say they believe in UFOS. Construct a 99% confidence interval for the population proportion of adults who believe in UFOS. C..... A 99% confidence interval for the population proportion is ( ). (Round to three decimal places as needed.)
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- In a survey of 2254 adults, 716 say they believe in UFOs. Construct a 95% confidence interval for the population proportion of adults who believe in UFOs. A 95% confidence interval for the population proportion is (Round to three decimal places as needed.) Interpret your results. Choose the correct answer below. O A. The endpoints of the given confidence interval shows that 95% of adults believe in UFOs. OB. With 95% confidence, it can be said that the population proportion of adults who believe in UFOs is between the endpoints of the given confidence interval. OC. With 95% confidence, it can be said that the sample proportion of adults who believe in UFOs is between the endpoints of the given confidence interval. O D. With 95% probability, the population proportion of adults who do not believe in UFOs is between the endpoints of the given confidence interval. # 3 e d C с $ 4 F f 25 % V t bo 6 b y 30 & 7 h O n u j * 8 m 9 k ✓ Time Remaining: 00:50:41 :) 0 Р Next + 11 ?A magazine provided results from a poll of 1000 adults who were asked to identify their favorite pie. Among the 1000 respondents, 11% chose chocolate pie, and the margin of error was given as ±5 percentage points. What values do p, q, n, E, and p represent? If the confidence level is 99%, what is the value of a? The value of p is The value of q is The value of n is The value of E is The value of p isIf n=17, x bar = 39, and s=8, find the margin of error at a 99% confidence level. Give the answer to two decimal places.
- In a survey of 3242 adults aged 57 through 85 years, it was found that 82.9% of them used at least one prescription medication. Complete parts (a) through (c) below. a. How many of the 3242 subjects used at least one prescription medication? ____ (Round to the nearest integer as needed.) b. Construct a 90% confidence interval estimate of the percentage of adults aged 57 through 85 years who use at least one prescription medication. ____%<p<____% (Round to one decimal place as needed.) c. What do the results tell us about the proportion of college students who use at least one prescription medication? A. The results tell us that there is a 90% probability that the true proportion of college students who use at least one prescription medication is in the interval found in part (b). B. The results tell us that, with 90% confidence, the probability that a college student uses at least one prescription medication is in the interval found in part (b).…In a survey of 356 people who attended a local professional soccer team’s most recent home game, 135 said that they were fans of the visiting team. Create a 95% confidence interval for the population proportion of attendees who were fans of the visiting team. Use a TI-83, TI-83 plus, or TI-84 calculator, rounding your answers to three decimal places. Provide your answer below: ( , )You are interested in constructing a 99% confidence interval for the proportion of all caterpillars that eventually become butterflies. Of the 431 randomly selected caterpillars observed, 50 lived to become butterflies. Round answers to 4 decimal places where possible. a. With 99% confidence the proportion of all caterpillars that lived to become a butterfly is between___ and___ . b. If many groups of 431 randomly selected caterpillars were observed, then a different confidence interval would be produced from each group. About____ percent of these confidence intervals will contain the true population proportion of caterpillars that become butterflies and about ____ percent will not contain the true population proportion.
- In a survey of 2002 adults in a recent year, 702 made a New Year's resolution to eat healthier. Construct 90% and 95% confidence intervals for the population proportion. Interpret the results and compare the widths of the confidence intervals. The 90% confidence interval for the population proportion p is ,. (Round to three decimal places as needed.) The 95% confidence interval for the population proportion p is ,. (Round to three decimal places as needed.) With the given confidence, it can be said that the ▼ population proportion sample proportion of adults who say they have made a New Year's resolution to eat healthier is ▼ greater than the lower endpoint not between the endpoints less than the upper endpoint between the endpoints of the given confidence interval. Compare the widths of the confidence intervals. Choose the correct answer below. A. The 90% confidence interval is wider. B. The 95% confidence interval is wider.…In a survey of 2316 adults, 722 say they believe in UFOs. Construct a 90% confidence interval for the population proportion of adults who believe in UFOs. A 90% confidence interval for the population proportion is ( (Round to three decimal places as needed.) Interpret your results. Choose the correct answer below. O A. With 90% confidence, it can be said that the population proportion of adults who believe in UFOs is between the endpoints of the given confidence interval. OB. With 90% confidence, it can be said that the sample proportion of adults who believe in UFOs is between the endpoints of the given confidence interval. O C. The endpoints of the given confidence interval shows that 90% of adults believe in UFOs. O D. With 90% probability, the population proportion of adults who do not believe in UFOs is between the endpoints of the given confidence interval.Suppose a researcher takes a random sample of 1,000 students from a university and creates a 95% confidence interval for the true proportion of left handed students at the university. Which of the following is true about this interval when compared with a 95% confidence interval based on a random sample of 600 students from the same university? a. The interval based on a sample of 600 students will be wider than the interval based on a sample of 1,000 students. b. The lower and upper endpoints of the 95% CI based on 600 students will both be larger than the corresponding lower and upper endpoints of the 95% CI based on 1,000 students. c. 95% CIs based in samples of 1,000 students are more likely to include the true population proportion than 95% CIs based on samples of 600 students. d. The interval based on a 1,000 students will be wider than the interval based on 600 students. 2. If the researchers above wished to decrease the width of the mean confidence interval for the mean age…
- The following are the score SAT scores of 5 students of a certain class in a university. Find the 99% confidence interval of the mean SAT score of all the students in the class. 92 83 89 79 87 What is the upper limit of this confidence interval? Round your answer to 2 decimal places.In a survey of 2294 adults, 740 say they believe in UFOS. Construct a 99% confidence interval for the population proportion of adults who believe in UFOS. A 99% confidence interval for the population proportion is ( ). (Round to three decimal places as needed.) Interpret your results. Choose the correct answer below. O A. The endpoints of the given confidence interval shows that 99% of adults believe in UFOS. O B. With 99% confidence, it can be said that the sample proportion of adults who believe in UFOS is between the endpoints of the given confidence interval. OC. With 99% confidence, it can be said that the population proportion of adults who believe in UFOS is between the endpoints of the given confidence interval. D. With 99% probability, the population proportion of adults who do not believe in UFOS is between the endpoints of the given confidence interval. Click to select your answer(s).You are interested in constructing a 90% confidence interval for the proportion of all caterpillars that eventually become butterflies. Of the 425 randomly selected caterpillars observed, 55 lived to become butterflies. Round answers to 4 decimal places where possible. a. With 90% confidence the proportion of all caterpillars that lived to become a butterfly is between ___and____ . b. If many groups of 425 randomly selected caterpillars were observed, then a different confidence interval would be produced from each group. About ____ percent of these confidence intervals will contain the true population proportion of caterpillars that become butterflies and about _____percent will not contain the true population proportion.