A publisher of magazines for teenager's wishes to determine whether there is a relationship between the gender of a teenager and the type ofthe magazine that he/she prefer to read. A survey of 200 teenagers produced the following results:GenderMaleFemaleTotalSelect one:a. 7.815b. 5.991Music291847O c. 4.605O d. 9.210e. 3.841Type of MagazineClothes322557Performing the Chi-squared test at a 10% level of significance to determine whether there is a relationship between the gender of the teenagerand magazine preference, determine the critical value of the test.Gadgets593796Total12080200

Given that Type of Magazine Total Gender Music Clothes Gadgets Male 29 32 59…

Answered: A publisher of magazines for teenager's…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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9. In 2016 an online poll was conducted regarding the results of the 2016 NBA All-Star Dunk Contest. The poll asked 100,000 people, "Who [do you think] won the dunk contest?". The results are shown in the relative frequency table below Response Percentage Aaron Gordon 55% Zach Lavine 45% Suppose we would like to estimate the proportion of all NBA fans who thought Aaron Gordon won the dunk contest. What is the value of the point estimate a. for our 95% confidence interval? What is the margin of error for our 95% confidence interval? (Use the formula to compute it). Round your answer to three decimal places. b. sing your answers to parts (a) and (b), find a 95% confidence interval estimating the proportion of all NBA fans who thought Aaron Gordon won the dunk C. contest.
2. What is the difference between a histogram and a bar chart? For what type of data would each be appropriate.
Recherchers conducted two surveys about teens are their use of social media. The First survey asked a Random sample of 800 U.S. teens about their use of Instagram. A second survey asked the same question to a Random sample of 2253 Canadian teens. In these two studies. 73% of U.S. teens and 88% of Canadian teens said that they use instagram. Use these results to answee the following questions about the proportion of U.S. and Canadian teens that use instagram. (Round to the nearest whole hundredth as needed).
A survey was taken on course selection and gender. The results are represented in the table below. Воoys Girls ТОТAL Band 27 17 44 Team Sports 64 46 110 Neither 13 9. 22 ТОTAL 104 72 176 What percentage of those surveyed are boys OR taking band? Round to the nearest percent. % are boys or taking band
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Scott surveyed 40 friends on Facebook and asked them where they were born and where they went to college. He then categorized the data by whether they were born in Arizona (or not) and whether they went to college in Arizona (or not). The data are below. 21 people were born in Arizona 17 people went to college in Arizona 9 people were born in Arizona and went (or go) to college in Arizona a) How many people were born in Arizona and did not go to college in Arizona? b) How many people did not go to college in Arizona? c) How many people were neither born in Arizona nor went to college in Arizona?
The 2008 general social survey asked a nationally representative sample of 1324 adult americans to report how many hours of television they watch in a typical day. The resulting data are reported in the following table counts. Median number of hours of tv watching per day
What is the proportion of the blood type O?
By a small margin, Facebook remains the top choice of social media over all ages, with 29% using Facebook most often among those using social media sites. However, more visually oriented social networks such as Snapchat and Instagram continue to draw in younger audiences. When asked "Which one social networking brand do you use most often?" the results in the table show the top brands chosen by Americans aged 12-34 who currently use any social networking site or service. Social M edia Site Faceboo k Snapchat Instagra m Twitter Percentage That Use Most Often 29 28 26 6 20 (a) What is the sum of the percentages for these top social media sites? Give your answer as an exact number. Macmillan Learning top social media sites: What percent of Americans aged 12-34 use other social media sites most often? Give your answer as an exact number. other social media sites: do %
Researchers want to estimate the percentage of people who thought drinking and driving was a serious problem. Reserchers waited outside a bar to question people. They usually find 11%of bar patrons believe drinking and driving is a serious problem. a. identify the populatin of interest b. identify the sample c. identify the population parameter of interest d. identifywho if anyone was left out of the study
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Research Study: The following data collected lists the typing speed as measured by a standard typing test for 5 college students, along with the number of pages they had to type for their project.Instructions: Use the data collected to compute the values listed in Table#1. Use .05 significance. Research Data Collected: Student Number of pages typed Typing speed Chris 37 70 Mary 6 54 Paul 12 25 Juan 34 42 Marcelo 16 35 Table #1 1. SP 2. r2 3. ∑x 4. ∑y 5. SSx 6. SSy 7. a 8. b 9. F ratio 10. F critical (value from F table)

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