1. A survey was conducted about the music styles preferred by the participants.The results are as follows:350 liked classic rock, 300 liked country, and 3500 liked classical. In addition100 liked classic rock and country, 80 liked classic rock and classical and 60liked country and classical,. There were 200 that did not like any of these and40 that liked classic rock and country and classical.How many were in the survey. The numbers above are correct.

Given Data: How many were in the survey.

Answered: 1. A survey was conducted about the…

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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Holiday Blues. A poll was conducted by Opinion Research Corporation to estimate the proportions of men and women who get the “holiday blues.” Identify the a. specied attribute.b. two populations.c. two population proportions.d. two sample proportions.e. According to the poll, 34% of men and 44% of women get the “holiday blues.” Are the proportions 0.34 and 0.44 sample proportions or population proportions? Explain your answer.
Dr. A. Ventura is interested in determining what kinds and how many pets people own in Bakersfield. He stands outside Petco and asks people what kind of pet they own. This is the result of his survey: dog=1; cat=2; bird=3; reptile=4; fish=5; other=6 1,1,2,2,2,1,1,3,2,3,1,1,1,2,2,4,4,2,2,1,1,1,5,4,3,4,1,1,1,2,2,6,1,1,2,2,1,2,1,2,6,3,4,5
Suppose a poll was to be conducted in an elementary school by interviewing a representative sample of 50 students. The interviewer sat outside the cafeteria when it opened and talked to the first 50 students. 1. Would this be a representative sample of the elementary school. Support your answer (tell why). 2a. Describe (who is) the population of interest. 2b. Describe (who is) the sample.
Virginia polled a large sample of individuals to find the percentage of students with known food allergies and the percentage of students without known food allergies. Which of the following could sufficiently display the data if only the two given categories are to be included? Select the correct answer below: bar graph pie chart either a pie chart or a bar graph neither a pie chart nor a bar graph
Last year 46% of business owners gave a holiday gift to their employees. A survey of business owners conducted this year indicated that 35% plan to provide a holiday gift to their employees. Suppose the survey results are based on a sample of 60 business owners. How many business owners in the survey plan to provide a holiday gift to their employees this year?
a list of the over 2300 Henry Clay high School is compiled. from that list 250 names are randomly chosen and given a survey to complete. of those surveyed 72% said they intended to attend college after completing high school what would the 250 students surveyed would be an example of?
In a sample of 600 college students, 87.2% said they graduated from high school. How many of the students graduated from high school?
Twenty-nine college students, identified as having a positive attitude about Mitt Romney as compared to Barack Obama in the 2012 presidential election, were asked to rate how trustworthy the face of Mitt Romney appeared, as represented in their mental image of Mitt Romney’s face. Ratings were on a scale of 0 to 7, with 0 being “not at all trustworthy” and 7 being “extremely trustworthy.” Here are the 29 ratings: 2.6 3.2 3.7 3.3 3.4 3.6 3.7 3.8 3.9 4.1 4.2 4.9 5.7 4.2 3.9 3.2 4.5 5.0 5.0 4.6 4.6 3.9 3.9 5.3 2.8 2.6 3.0 3.3 3.7 a 95% confidence interval for the mean rating. Is there significant evidence at the 5% level that the mean rating is greater than 3.5 (a neutral rating)?
A consumer group wanted to determine if there was a difference in customer perceptions about prices for a specific type of toy depending on where the toy was purchased. In the local area there are three main retailers: W-Mart, Tag, and URToy. For each retailer, the consumer group randomly selected 5 customers, and asked them to rate how expensive they thought the toy was on a 1-to-10 scale (1= not expensive, to 10 = very expensive). The toy was priced the same at all retail stores. 1. What kind of statistical test should be used to test the consumer group's research goal, assuming that the researcher wanted to use the 1-to-10 scale as a numerical interval measure? A. Repeated-measures t-test B. One-way Independent Measures ANOVA C. Repeated-measures ANOVA D. Independent-measures t-test 2. State the hypothesis that aims to test the consumer group’s research goal (i.e., what is H0 and HA).
Matt E. Matic was applying for a job. To determine whether he could handle the job, the personnel manager sent him out to poll 100 people about their favorite types of TV shows. His data were as follows. 57 preferred comedies. 40 preferred variety shows. 42 preferred serious drama. 17 preferred comedies and variety programs. 15 preferred variety and serious drama. 18 preferred comedies and serious drama. 8 preferred all types. 5 did not like any of these TV show types. If you were the personnel manager, would you hire Matt on the basis of this survey? Why or why not?
A random sample of 40 students from each grade level was surveyed regarding their preference for a class field trip. If there are 180 members of the 8th grade class, then what percent preferred either the museum or the sports complex? Show your work.
1. Identify whether the numbers are statistics or parameters. a. Of all US third grade teachers, 32% say that knowing cursive writing is an essential skill. b. Of the 500 US third grade teachers polled, 34% say that knowing cursive writing is an essential skill.

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