A poll asked respondents if they agreed with the statement that colleges should reserve acertain number of scholarships exclusively for minorities and those age > 20. Hypotheticalresults of the poll are tabulated in the Venn diagram. How many of those age ≥ 20 agreedwith the statement?CThe number of those age ≥ 20 that agreed with the statement isUC (age<20)47A (Agree)B (Afric. Amer.)1109

We solve this problem with the help of formula Number of those age≥20 agree with the statement…

Answered: A poll asked respondents if they agreed…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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For this part, you will find it helpful to use a Venn diagram. You may submit a Venn diagram orthoroughly explain how you reached each answer.In a math 105 class of 34 students, a survey showed that 20 students used the ALEKS e-text atleast once, 7 used a video at least once, and 5 used both the e-text and a video at least once.1. How many students used only the e-text?2. How many students used neither the e-text nor the videos at least once?
2. Jada surveyed 300 people from various age groups about their shoe preference. The two-way table summarizes the results of the survey. prefers prefers sneakers prefers shoes that sneakers with total without laces are not sneakers laces 4-10 12 3 36 years old 11-17 21 48 39 108 years old 18-24 15 54 87 156 years old total 57 114 129 300 Jada concludes that there is a possible association between age and shoe preference. Is Jada's conclusion reasonable? Explain your reasoning. 21
An aesthetic club has 100 members. Out of them 40 do dancing, 45 do music and 24 do drama. 15 do both dancing and music, 11 do both dancing and drama and 13 do both music and drama and 5 do dancing, music and drama. Remaining members do arts. Let D represents the randomly selected member does dancing, M represents the randomly selected member does music, R represents the randomly selected member does drama. A represents the randomly selected member does arts. Represent the given information in a Venn diagram. Use that Venn diagram to answer the following questions. a) Find the probability that a randomly selected member either does dancing or music. b) Find whether the events “The randomly selected member does drama” and “The randomly selected member does music” are independent or not.
1. Suppose a senior is choosing classes and must select from a set of equal value classes needed for graduation There are 15 classes, all offered at different times. The student must take 5 classes to graduate. a. How many possible course schedules can the student choose? b. Suppose another student in the same major also chooses a schedule from the same 15 courses, also 5 courses, and chooses them independently of the first student (say each class is equally likely to be chosen). What is the probability that the two students choose the exact same schedule?
1. If a choice data satisfies SARP it also satisfies WARP.2.If a choice data violates SARP it also violates WARP. which of the two statements are true? are both true
6) A small business owner you follow on TikTok is SO EXCITED because last month, she was able to begin selling her product in a popular chain store around the nation. Her contract with the chain store says that at any time, there will be at least 20 of her products sitting out on the shelves. She wants to conduct a survey to see if that is true. She visits 5 of the local chain stores around her and records the number of products of hers that are on the shelves. She will then construct a 95% confidence interval to determine the mean number of products on the shelves for all of the stores. (a) Discuss whether this study meets the each of the conditions for constructing a confidence interval. If one of the conditions has not been met, what additional information would be required or what change in the study would you recommend? (b) If, instead of constructing a 95% confidence interval, the business owner constructed a 98% confidence interval, would the 98% interval be wider, narrower, or…
9. A group of 50 single men were asked which dating apps they had on their phones. The follo data were collected: 33 of the men had the Tinder app. 30 of the men had the Coffee Meets Bagel app. 26 of the men had the Hinge app. 16 of the men had both the Tinder and Coffee Meets Bagel apps. 14 of the men had both Tinder and Hinge apps. 18 men had both Hinge and Coffee Meets Bagel apps. 7 men had all three apps on their phones. a) Represent this information in a Venn diagram: b) Calculate the number of single men who have none of these apps on their phone. c) How many single men only had Tinder on their phone? d) How many students own at most two of the apps?
A survey of 1000 adult Internet users found that 55% of 18-to 24- year –olds, 60% of 25-to 34- year –olds, 64% of 35-to 49- year –olds, 78% of 50 – to- 64 year-olds, and 85% of 65 – to- 89-year-olds opposed online ads tailored to their individual interests. Supposed the survey was based on 200 respondents in each of the five age groups. Construct the contingency table based on the information given. Compute the expected frequencies for each cell. Compute. Is there evidence of a significance difference among the age groups with respect to the proportion who preferred to use media social as the medium of communication? (Use α=0.01)
15. Which of these diagrams could represent the top view of a standard drinking cup? A B Provide an explanation/justification for your choice.

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