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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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A national publication showed the following distribution of favorite class subjects for high school students. Class Subject Math English Social Studies Physical Education Music Other Percentage 5% 14% 28% 26% 20% 7% Pasquale, a student from a high school of 1,200 students, wants to see whether the distribution at his school matches that of the publication. He stands at the school entrance in the morning and asks the first 40 students he sees what their favorite class is. Pasquale records the following table of observed values. Class Subject Math English Social Studies Physical Education Music Other Observed 7 8 7 6 6 6 He decides to conduct a chi-square goodness-of-fit test to see whether his high school's distribution differs significantly from that of the publication. Pasquale’s statistics teacher tells him that his information does not meet the conditions necessary for a goodness-of-fit test. Which condition has not been met? Data are collected using a random…
The histograms show the cost of living, in dollars, for 32 U.S. cities. The histogram on the left shows the cost of living for the 32 cities using bins $10 wide, and the histogram on the right displays the same data using bins that are $6 wide. Compare the distributions (shape, center, spread, unusual features). Choose the best answer below: a. The distribution in the left histogram of the cost of living in the 32 U.S. cities is unimodal and skewed to the right. The distribution is centered around $100, and spread out, with values ranging from $80 to $140. The distribution in the right histogram appears bimodal, with many cities costing just under $104 and another smaller cluster around $119. b. The distribution in the left histogram of the cost of living in the 32 U.S. cities is unimodal and skewed to the right. The distribution is centered around $100, and spread out, with values ranging from $80 to $140. The distribution in the right histogram appears bimodal, with many cities…
This table shows the age distribution of people in the United States in 2010. a. Complete the last column of a copy of this table. Proportion of Population! Age Number of People Under 18 74,181,467 0.2403 18-44 112,806,642 45-64 81,489,445 0.2639 65 and Over 40,267,984 Total 308,745,538 Source: Age and Sex Composition: 2010, Census Briefs, www.census.gov/prod/ cen2010/briefs/c2010br-03.pdf The fellew US
The following histogram represents the distribution of scores on a ten point quiz. Step 3 of 3: What is the total number of people who made a score between 5 and 7 inclusive? Quiz Scores 16 14 12 - ww* 10 8- 6- 4- 2- 1 4 6. 7 8. 9. 10 Score Frequency
2.What percentage of data is represented by the shaded area? Enter your answer as a number, like this: 42%
Marvel movies - Kylie is a huge fan of Marvel movies. She finds an online poll that asks, "What is the best movie of the Marvel Cinematic Universe?" and saves the data. For a class project she wants to determine if the distribution of her classmates' favorite Marvel movies is different from the one published in the online poll. She surveys the 215 students in her statistics class. The table below contains the percentages reported by the online poll and the observed counts from her classmates. Report all calculated answers to 4 decimal places. Poll Observed Movie Percentage Count Captain America: The Winter Soldier 18.1% 34 Guardians of the Galaxy 14% 34 The Avengers 13.9% 32 Captain America: Civil War 11.4% 24 Iron Man 7.5% 20 Doctor Strange 3.7% 10 Other Marvel movie 31.4% 61
The weights, in pounds, of packages on a delivery truck are shown in the stem-and-leaf plot. Find the mean, the median, and the mode of the data, if possible. If any measure cannot be found or does not represent the center of the data, explain why. ... OA. The mean is 0 36 1 0347 2 2333669 3 045556789 4 01346 5 5 Key: 30=30 Find the mean. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. (Round to one decimal place as needed.) OB. The mean cannot be calculated because the sample size is too small. OC. The mean cannot be calculated because the data are at the nominal level of measurement. D. The mean cannot be calculated because there is an even number of data entries.
On the first day of class, a statistics professor asked her students to report their grade point averages (GPAs) as part of a class survey. For those students who knew their GPAs, the histogram was: The distribution is:
Find: a. The score that sets the cut-off mark of 75% passing b. The score that surpasses the 10% of the distribution c. The score that exceeds 10% of the examinees
A student must have a B average or better for all courses to qualify for any athletic team at Jefferson High School. The table below shows the distribution of students' grades in three sports at the school. Students with Students with a Sport an A Average B Average Field hockey 15 4 Basketball 7 13 Football 2 22
Given the data set: 6, 19, 17, 23, 20, 10. Determine (i). the percentile rank for each test score,
For the sample scores in the frequency distribution table below, the median is 1 4 4. 1 1 1 3.

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What is the total number of scores for the distribution shown in the following table?​ X f 4 1 3 3 2 7 1 2 Select one: a. ​14 b. ​13 c. ​11 d. 24

What is the total number of scores for the distribution shown in the following table? X f 4 1 3 3 2 7 1 2 Select one: a. 14 b. 13 c. 11 d. 24