MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Youare the campaign manager for a politician. Last month’s poll showed your candidate had 46% support. Now you want to know what percent of the voters would vote for your candidate if the election were held today. You want 95% confidence in your answer, with a margin of error no more than 3%. Determine how many voters you need to survey
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- A software company is interested in improving customer satisfaction rate from the 74% currently claimed. The company sponsored a survey of 113 customers and found that 90 customers were satisfied.arrow_forwardA study of 552 first-year college students asked about their preferences for online resources. One question asked them to pick their favorite. Here are the results in a pie chart. Pie Chart for the Online Resource Wikipedia 9% Libriary 14% Other Google 74% Select correct answer(s). This is a multiple-answer question. It may have more than one correct answers. i. The percentage in the pie chart shows the percent for each category of a qualitative or a categorical variable. ii. Google is the favorite for about three-quarters of the students. iii. More than 85% of the students are in favor of using either Google or library. iv. Less than 20% of the students are in favor of using either library or Wikipedia.arrow_forwardAbout 40% of Jayden's texts are to his brother. 14. If Jayden sent 1500 texts last month, about how many did he send to his brother?arrow_forward
- I would like to esCmate the proporCon of adults who own a pet. How many people should I poll in order to be 94% confident that I am within 2% of the actual proporCon?arrow_forwardApproximately 21% of music lovers like Country Music. Of those who do, 97% do not have mild brain damage.What percent of music lovers like Country and have Brain Damage?arrow_forwardDuring a basketball practice mai attempted 40 free throws and was successful on 25% of them. How many successful free throws did she make?arrow_forward
- After the premiere of the new comedy Bumblebee, moviegoers were asked in a quick poll whether they liked the movie. Out of 100 adults, all but 21 said they liked the movie, whereas out of 50 teenagers, all but 16 said they liked the movie. Fill in the blanks below to make the most reasonable statement possible. At the movie premiere, ▼(Choose one) moviegoers liked the movie less. That is because only % liked the movie, whereas % of the ▼(Choose one) moviegoers liked the movie.arrow_forwardThe football game was attended by 237 people, down 40% from last week. How many people attended last weeks game?arrow_forwardAt an ice cream shop, 145 customers were surveyed about what flavor is their favorite. The results of the survey are in the table below. Favorite Flavor - Number Chocolate - 87 Vanilla - 40 Strawberry - 16 What percent of students surveyed chose Chocolate as their favorite flavor?arrow_forward
- A school superintendent wanted to know whether there were differences between the high schools in her district with regards to the proportion of students who do not live with their biological parents. She surveyed 200 students from each of the two high schools – East and West. The proportion of students from the survey at East who do not live with their biological parents is 3.4%. The proportion of students from the survey at East who do not live with their biological parents is 4.2%. Using a 95% confidence interval (2SD or Theory based), can the superintendent conclude that there is a difference between East and West with respect to the proportion of students who do not live with their biological parents. Group of answer choices Yes she can conclude there is a difference because the confidence intervals overlap. No she cannot conclude there is a difference because the confidence intervals overlap. Yes she can conclude there is a difference because the confidence intervals don’t…arrow_forwardAt a local Dunkin’ Donuts, a survey showed that out of 1,300 customers eating lunch, 520 ordered coffee with their meal. What percent of customers did not order coffee?arrow_forwardThere are 300 eighth graders at Wilson middle school. In the class president election, 195 students voted for Luke, 54 students voted for Alice and 51 students voted for Chris. What percent of eighth graders voted for Luke?arrow_forward
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