A recent survey collected data from 1000 randomly selected Internet users. Thecharacteristics of the users include their gender, age, education, marital status, andannual income. Using Excel®, the following pivot tables are produced.Count of Education EducationMarital StatusHigh school or lessBeyond high schoolTotalSingle16.00%MarriedTotal32.00%48.00%15.10%36.90%52.00%31.10%68.90%100.00%Count of Gender GenderAgeMenWomen Grand Total16-2919.20% 12.60%31.80%30-4322.20% 15.10%37.30%44-5713.30%7.20%20.50%58-715.10%3.80%8.90%72-851.00%0.50%1.50%Grand Total60.80% 39.20% 100.00%Count of EmploymentEmploymentUnemployedEmployedGrand TotalTotal23.20%76.80%100.00%Average of Annual_IncomeEmploymentUnemployedEmployedGrand Total|Total22988.9310360563.7643251846.403Approximate the percentage of these Internet users who are men under the age of30.15%19%23%

Answered: A recent survey collected data from…

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 statistics professor wants to determine how students' final exam scores arerelated to the quiz scores, midterm exam scores, and number of classes missed. The professor selects 12 students from his class and obtains the following data:
Explain the meaning of an element, a variable, an observation, and a data set.
Explain the concept of Degrees of Freedom through an example:
write a paragraph that discusses: Why is this graphic might be needed for that specific topic Why the graphic is misleading or is a good representation of the data How the graphic could be improved
The histogram below gives the length of service of members of the Department of Mathematics and Statistics at a particular university. The classes, in years of service, are 0-4.9, 5-9.9, etc., and the vertical axis represents the number of faculty. (a) What percent of the department faculty have 5 or more years of service? (answer in %) (b) If a member of the department is chosen at random to serve on a university committee, what is the probability (in decimal form) that the chosen representitive will have between 10 and 25 years of service? (c) What is the probability the representative above will have less than 15 years of service given that the person has less than 20 years of service?
Determine the mean of the given data -14,5,3,-15,-4,1
A recent survey collected data from 1000 randomly selected Internet users. The characteristics of the users include their gender, age, education, marital status, and annual income. Using Excel®, the following pivot tables are produced. Count of Education Education Marital_Status High school or less Beyond high school Total Single 16.00% Married Total 32.00% 48.00% 15.10% 36.90% 52.00% 31.10% 68.90% 100.00% Count of Gender Gender Age 16-29 Women Grand Total 12.60% Men 19.20% 31.80% 30-43 22.20% 15.10% 37.30% 44-57 13.30% 7.20% 20.50% 58-71 5.10% 3.80% 8.90% 0.50% 60.80% 39.20% 100.00% 72-85 1.00% 1.50% Grand Total Count of Employment Employment Unemployed Employed Grand Total Total 23.20% 76.80% 100.00% Average of Annual_Income Employment Unemployed Employed Total 22988.93103 60563.76432 Grand Total 51846.403 Approximate the percentage of these Internet users who are married with formal education beyond high school. 25% 37% 45%
Q6A The World Bank collected data on the percentage of GDP that a country spends on health expenditures ("Health expenditure," 2013) and also the percentage of women receiving prenatal care ("Pregnant woman receiving," 2013). The data for 14 countries where this information is available for the year 2011 are in following table (note: outlier data has been removed): Data of Health Expenditure versus Prenatal Care Health Expenditure (% of GDP) Prenatal Care (%) 3.7 54.6 5.2 93.7 5.2 84.7 10.0 100.0 4.7 42.5 4.8 96.4 6.0 77.1 5.4 58.3 4.8 95.4 4.1 78.0 6.0 93.3 9.5 93.3 6.8 93.7 6.1 89.8 Test at the 5% level for a correlation between percentage spent on health expenditure and the percentage of women receiving prenatal care. (i) Which of the following statements correctly define both the null hypothesis HOand the alternative hypothesis HA ? A. HO : ρ = 0 HA : ρ < 0 B. HO :…
Create a side-by-side boxplot for vitamin D level vs. NewAge and a side- by-side boxplot for vitamin D level vs. country. Create a scatterplot to show the relationship between vitamin D level and Age. Compare these two side-by-side boxplots and the scatterplot and explain your findings. • Note: Write appropriate captions for the tables, graphs, and outputs.
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On December 17, 2007 baseball writer John Hickey wrote an article for the Seattle P-I about increases to ticket prices for Seattle Mariners games during the 2008 season. The article included a data set that listed the average ticket price for each MLB team, the league in which the team plays (AL or NL), the number of wins during the 2007 season and the cost per win (in dollars). The data for the 16 National League teams are shown below. team league price wins cost/win Arizona Diamondbacks NL 19.68 90 35.40 Atlanta Braves NL 17.07 84 32.89 Chicago Cubs NL 34.30 85 65.33 Cincinnati Reds NL 17.90 72 40.32 Colorado Rockies NL 14.72 90 26.67 Florida Marlins NL 16.70 71 38.13 Houston Astros NL 26.66 73 59.11 Los Angeles Dodgers NL 20.09 82 34.64 Milwaukee Brewers NL 18.11 83 35.37 N.Y. Mets NL 25.28 88 46.56 Philadelphia Phillies NL 26.73 89 48.69 Pittsburgh Pirates NL 17.08 68 40.67 San Diego Padres NL 20.83 89 38.15 San Francisco Giants NL 24.53 71…
What level of data does the example represent? Credit Card Number

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