Identify each of the following data sets as either apopulation or a sample:a. The grade point averages (GPAs) of allstudents at a college.b. The GPAs of a randomly selected group ofstudents on a college campus.c. The ages of the nine Supreme Court Justicesof the United States on January 1, 1842.d. The gender of every second customer whoenters a movie theater.e. The lengths of Atlantic croakers caught on afishing trip to the beach.

Given that We have to identify population and sample : a. The grade point averages (GPAs) of all…

Answered: Identify each of the following data…

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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The income of residents of Chicago, IL has a bell shaped and symmetric histogram, with a mean of $65,000 and a S.D. of $13,000. 1) What percentage of residents have an income more than $78,000 or less than $52,000? 2) what percentage of residents have an income between $39,000 and $91,000? 3) What percentage of residents have an income less than $104,000? 4) What percentage have an income more than $65000? 5) Less than $26,000 Hint: you need to draw a curve for each part 1-4, and calculate the mean ± 1, 2, 3 S.D.
Do you need inferential statistics to answer each of the following questions? (for each question answer “yes” if inferential statistics is needed or “no” if not) (from khanacademy.com)a.How old are you?b.How old are the people in this class?c.Do wolves weigh more than dogs?d.Does your dog weigh more than that wolf?e.Does it rain more in Seattle than Singapore?f.What was the difference in rainfall between Seattle and Singapore in 2014?g.In general, will I use less gas driving 55 mph than 70 mph?h.Do English professors get paid less than engineering professors?i.Does the most highly paid English professor at Harvard get paid less than the most highly paid engineering professor at MIT?
Consider the following set of homerun distances (in feet) to centre field in 13 ballparks: {387, 400,400, 410, 410, 414, 415, 420, 420, 457, and 461}a. What is the median?b. What is the mean?c. What is the mode?
Here are seven ages of college students (in years): 30, 18, 44, 21, 22, 25, and 26. Find their median. a.) 25.00 b.) 26.57 c.) 8.60
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Suppose a survey question asks students, "Is your favorite baseball team the Oakland A's, the Los Angeles Dodgers, the San Diego Padres, the San Francisco Giants, or Other?" What scale of measurement is being used? A. Nominal B. Interval C. Ratio D. Ordinal
Use the following Frequency table to calculate the median. Class Frequency 2……4 4 5……7 6 8…….10 3 11…..13 2 14…..16 5
The lengths (in kilometers) of a random sample of 18 rivers on the South Island of New Zealand that flow to the Pacific Ocean are listed in table below. Lengths of Rivers (in km) 136 121 322 209 208 98 160 66 97 56 90 48 167 64 72 93 288 138 For the data shown above, find the following. Do not round any of your answers. The program here will take either answer.a) Find the 5-number summary: { ,,,, } b) Compute the IQR. Put your answer in the first box and the correct units in the second box. c) What is the lower fence for this data set? What is the upper fence for this data set? d) Which of the following is the correct modified boxplot for the data? What units would go on each of your answers above?
Consider the following data and create a frequency table with 5 classes. Top 10 Provinces by Number of McDonald's Ontario.. Quebec.. Alberta...... British Columbia. Manitoba. Saskatchewan.... Nova Scotia.. New Brunswick........ Newfoundland and Labrador.... Prince Edward Island. a. What is the class width? b. Fill out the Frequency table Class Limits Lower Upper 490 302 192 182 ..55 42 39 35 19 .6 Class Boundaries Lower Upper Midpoint
City Time (minutes) Rome 24.9 Milan 26.8 Naples 26.2 Turin 28.1 Palermo 31.7 Genoa 25.8 Bologna 23.3 Florence 32.1 Bari 28.5 Catania 24.4 Verona 29.3 Venice 24.8 Messina 38.1 Padua 28.3 Trieste 28.4 Taranto 24.6 Prato 20.1 Modena 23.4 a) What is the mean commute time for these 18 cities? b) What is the median commute time for these 18 cities? c) What is the mode for these 18 cities? d) What is the variance and standard deviation of commute times for these 18 cities? e) Find the z – score value of commute time for these 18 cities. f) Find 28th and 77th Percentile of commute times for these 18 cities.
3.What levelof measurement –nominal, ordinal, interval, or ratio –do the following represent and WHY?a. number ofwebsites visited each dayb. 20% strongly agreed, 13% agreed, 5% disagreed, ..

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