2. "In a recent study, 65% of city residents support increased spending on recreation. The study isaccurate to within 3.1 percentage points, 19 times out of 20." What does this me..3. In a recent study 3 out of 4 math teachers recommend a Sharp calculator. State 3 questionsto critically analyse this statement

Question 2 ) Given that - “In a recent study, 65% of city residents support increased spending on…

Answered: 2. "In a recent study, 65% of city…

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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Imagine that the following four sentences are questions on a survey. Which question would produce data that belong to a discrete variable? A. How many years have you participated in track-and-field? B. What is the fastest time you’ve gotten on the 100 meter dash? C- How far can you throw a discus? D- What is your best track-and-field event?
4. Suppose a fourth movie reviewer is added to the set below. What would the fourth rating need to be to make the mean of the new data set equal 6? 0 OA. 2 OB. 3 O c. 5 O D. 6 1 2 3 4 5 6 7 8 9 10
Scenario: A guidance counselor wanted to know if anxiety differs based on time (first day of class in relation to the last day of class), and if this differs based on year in school (as a freshman, sophomore, junior, or senior). She collected data on a single group of students across their entire high school career at these eight time points — first and last day of freshman, sophomore, junior, and senior year. Anxiety was measured using a standardized scale ranging from 0 — 50, with higher scores indicating greater anxiety. Question: If p = .014 for the interaction of Time x Academic Year, what should the researcher conclude? Group of answer choices The interaction is not significant; no additional analyses are needed to interpret it. The interaction is significant; no additional analyses are needed to interpret it. The interaction is not significant; run correlated groups t-tests for post hoc analyses. The interaction is significant; for post hoc analyses, split the file…
1. A researcher is interested in choice and decisions. He looks at what people buyfor lunch in a university cafeteria. Which of the following best describes the data hecollects? a. He collects favorite lunch meal which is qualitative. He also collects data on how often each person buy that meal, which is also qualitative data. b. He collects how often participants buy their favorite meal, and this is a form of quantitative data.c. He asks participants to name their most frequently purchased meal, and this is qualitative data.d. He asks participants to tell him how many times a week they skip lunch because of their work, and this is qualitative data.
Researchers were interested in how much time balance (i.e., the degree to which you have enough time to do what you like) is related to happiness. They asked 12 adults to answer two questions (on 1 – 8 scales): (a) in a typical week, how much of your time are you able to spend doing the kinds of things that you enjoy (with higher scores indicating more time balance) and (b) taking all things together, how happy would you say you are (with higher scores indicating more happiness)? The research hypothesis is that there is an association between time balance and happiness. Use the Table of Descriptive statistics, correlation (r), the standard error of the correlation (SEr), and the r to zr Table, to go through the steps to compute the 95% CI. Report all values (excluding critical values) to TWO decimal places.Report critical values to THREE decimal places. Compute the following: Report all values to TWO decimal places.The Pearson Correlation = Answer Standard Error (SEr) = Answertobs =…
A report states the following percentiles corresponding to the amount of student borrowing for college graduates. 10th percentile $0 25th percentile $0 50th percentile $11,000 75th percentile $24,600 90th percentile $39,3000 For each of these percentiles, write a sentence interpreting the value of the percentile.
Do you need inferential statistics to answer each of the following questions? (Answer “yes” or “no” for each question) a. How many wheels are on a bicycle? b. How many bicycles are parked outside of the Starbucks at the corner of Boyd and Asp? c. What proportion of Belgium residents own bicycles? d. Do Oklahoma students outperform the national average on the college entrance exam? e. Did you outperform the national average on the college entrance exam? f. Is it hotter today in Tulsa than Topeka? g. Is the average temperature in Tulsa greater than that of Topeka
1. Fill in the blanks for each of the statements below. а. A survey of 1000 U.S. adults found that 40% think the internet is the best way to get news and information. Population: Sample: Variable of Interest: Type of Data (Qualitative or Quantitative): Is the 40% a parameter or statistic, and why? b. A survey of the 55 law firms in a local city found that the average hourly billing rate is $425. Population: Sample: Variable of Interest: Type of Data (Qualitative or Quantitative): Is the $425 a parameter or statistic, and why?.
Do you need inferential statistics to answer each of the following questions? (Answer “yes” or “no” for each question) a. How many wheels are on a bicycle? b. How many bicycles are parked outside of the Starbucks at the corner of Boyd and Asp? c. What proportion of Belgium residents own bicycles? d. Do Oklahoma students outperform the national average on the college entrance exam? e. Did you outperform the national average on the college entrance exam? f. Is it hotter today in Tulsa than Topeka? g. Is the average temperature in Tulsa greater than that of Topeka
1. Which of the following is an unbiased point estimator of a population proportion? A. p-value B. ?C. ?0D. ?̅
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%
ch 11 end. 6: In a bumper test, three types of autos were deliberately crashed into a barrier at 5 mph, and the resulting damage (in dollars) was estimated. Five test vehicles of each type were crashed, with the results shown below. Research question: Are the mean crash damages the same for these three vehicles?

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2. "In a recent study, 65% of city residents support increased spending on recreation. The study is accurate to within 3.1 percentage points, 19 times out of 20." What does this me..