MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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- A genetic experiment with peas resulted in one sample of offspring that consisted of 432 green peas and 172 yellow peas. a. Construct a 95% confidence interval to estimate of the percentage of yellow peas. b. It was expected that 25% of the offspring peas would be yellow. Given that the percentage of offspring yellow peas is not 25%, do the results contradict expectations?arrow_forwardA genetic experiment with peas resulted in one sample of offspring that consisted of 443 green peas and 167 yellow peas. a. Construct a 95% confidence interval to estimate of the percentage of yellow peas. b. Based on the confidence interval, do the results of the experiment appear to contradict the expectation that 25% of the offspring peas would be yellow?arrow_forwardThe figure to the right shows the results of a survey in which 1018 adults from Country A, 1025 adults from Country B, 1005 adults from Country C, 999 adults from Country D, and 999 adults from Country E were asked whether national identity is strongly tied to birthplace. Construct a 95% confidence interval for the population proportion of adults who say national identity is strongly tied to birthplace for each country listed. The 95% confidence interval for the proportion of adults from Country A who say national identity is strongly tied to birthplace is (____),(____) The 95% confidence interval for the proportion of adults from Country B who say national identity is strongly tied to birthplace is (____),(____) The 95% confidence interval for the proportion of adults from Country C who say national identity is strongly tied to birthplace is (____),(____) The 95% confidence interval for the proportion of adults from Country D who say national identity is strongly tied to…arrow_forward
- When a population has less variability, for the same margin of error and confidence level, the confidence interval becomes a. larger b. smaller c. of unchanged sizearrow_forwardConstruct a 95% confidence interval for p1 - p2 for a survey that finds 30% of 240 males and 41% of 200 females are opposed to the death penalty. Group of answer choices a.(-0.200, -0.021) b.(-1.532, 1.342) c.(-1.324, 1.512) d.(-0.561, 0.651)arrow_forwardIn a survey of 2300 adults, 718 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.)arrow_forward
- . In a random sample of 400 private high school students, 320 said they brought a smartphone to school that day, while in a random sample of 400 public high school students, 288 said they brought a smartphone to school that day. Which of the following represents a 98 percent confidence interval estimate for the difference (private high school minus public high school) between the proportions of all private high school and public high school students who bring a smartphone to school? (0.8)(0.2) (0.72)(0.28) (A) (0.8-0.72)±1.96, 400 400 (B) (0.8-0.72)±2.054, + (0.8)(0.2) (0.72)(0.28) 400 400 (C) (0.8-0.72)±2.326 + (0.8)(0.2) (0.72)(0.28) 400 400 1 (D) (0.8-0.72)±2.054, (0.76)(0.24) + 400 400 (E) (0.8-0.72)±2.326, (0.76)(0.24) + I 400 400arrow_forwardYou are interested in constructing a 99% confidence interval for the proportion of all caterpillars that eventually become butterflies. Of the 382 randomly selected caterpillars observed, 54 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 __.arrow_forwardA genetic experiment with peas resulted in one sample of offspring that consisted of 447 green peas and 169 yellow peas. a. Construct a 95% confidence interval to estimate of the percentage of yellow peas. b. Based on the confidence interval, do the results of the experiment appear to contradict the expectation that 25% of the offspring peas would be yellow?arrow_forward
- The figure to the right shows the results of a survey in which 2000 college graduates from the year 2016 were asked questions about employment. Construct 99% confidence intervals for the population proportion of college students who gave each response. Employment College students' responses to questions about employment Expect to stay at first employer for 3 or more years Completed an apprenticeship or intemship 70% 66% Employed in field of study 61% Feel underemployed 46% Prefer to work for a large company 15% The 99% confidence interval for the proportion of college students that expect to stay at their first employer for 3 or more years is (Round to three decimal places as needed.)arrow_forwardIn a survey of 2322 adults, 729 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.)arrow_forwardA random sample of 1000 NAU students in Flagstaff found 470 NAU students who drink coffee daily. Find a 95% confidence interval for the true percent of NAU students in Flagstaff who drink coffee daily. Express your results to the nearest hundredth of a percent. Answer ___to____%arrow_forward
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