The Human Resources Manager of a company employing 200 workers conducts asurvey to investigate whether there is a relationship between the age of workers andthe number of days they are absent per year. He takes a sample of 15 files andrecords the age and the number of days absent of the workers in the sample. He thenplots the results of the survey on the following scatter graph:ACTIVITY 3-2to investigate whether there is a relationship between the age of workers andsurveyageand the number of days absent of the workers in the sample. He thenrecords the60555045403530AGE252015100 2 4 6 8 10 12 14161820DAYS ABSENT PER YEAR• Do you think the department would decide that there is a correlation between thenumber of days absent and the age of workers? If yes, describe the correlation(positive or negative?) and explain.

Correlation is a parametric associational statistic that is extensively used by the statistician to…

Answered: The Human ager of a company employing…

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 price drivers pay for gasoline often varies a great deal across regions throughout the United States. The following data show the price per gallon for regular gasoline for a random sample of gasoline service stations for three major brands of gasoline (Shell, BP, and Marathon) located in eleven metropolitan areas across the upper Midwest region (OhioGasPrices.com website, March 18, 2012). Click on the datafile logo to reference the data. DATA file Shell BP Metropolitan Area Marathon Akron, Ohio Cincinnati, Ohio Cleveland, Ohio Columbus, Ohio Ft. Wayne, Indiana Indianapolis, Indiana Lansing, Michigan Lexington, Kentucky Louisville, Kentucky Muncie, Indiana Toledo, Ohio 3.77 3.72 3.87 3.76 3.78 3.87 3.89 3.79 3.83 3.83 3.85 3.77 3.83 3.85 3.93 3.84 3.84 4.04 3.87 3.87 3.99 3.79 3.78 3.81 3.69 3.78 3.84 3.84 3.83 3.79 3.79 3.86 3.86 Use a = .05 to test for any significant difference in the mean price of gasoline for the three brands. Round SS to 6 decimals, MS to 6 decimals, F to 2…
Data was collected for a sample of 7 organic snacks. The amount of sugar (in mg) in each snack is summarized in the histogram below. Snack Graph 12+ 10- 24 Snacks What is the sample size for this data set?
The 18 faculty members in a college Economics department range in age from 32 to 68 as presented in the step plot below. If the oldest faculty member retires and is replaced by a 26-year-old, the median age will: 324899 403569 534789 9 638 O decrease by 2 years. O stay the same. O increase by 2 years. increase by 4 years.
help please
Fifty randomly selected car salespersons were asked the number of cars they generally sell in one week. Nine people answered that they generally sell three cars; thirteen generally sell four cars; ten generally sell five cars; seven generally sell six cars; eleven generally sell seven cars. Complete the table. Data Value (# cars) Frequency Relative Frequency Cumulative Relative Frequency 3 4 6. 7
Thank you.
A marketing firm is doing research for an Internet-based company. It wants to appeal to the age group of people who spend the most money online. The company wants to know if there is a difference in the mean amount of money people spend per month on Internet purchases depending on their age bracket. The marketing firm looked at two age groups, 1818-2424 years and 2525-3030 years, and collected the data shown in the following table. Let Population 1 be the amount of money spent per month on Internet purchases by people in the 1818-2424 age bracket and Population 2 be the amount of money spent per month on Internet purchases by people in the 2525-3030 age bracket. Assume that the population variances are not the same. Internet Spending per Month 1818-2424 Years 2525-3030 Years Mean Amount Spent 62.4962.49 62.8462.84 Standard Deviation 20.0420.04 15.6415.64 Sample Size 1616 2828 Step 1 of 2 : Construct a 95%95% confidence interval for the true difference…
A market researcher asked a random sample of 100 individuals their favorite place to get coffee. The results are summarized in the table. Create a bar graph and a pie chart summarizing the data. Coffee Shop Number of individualsStarbucks 36Dunkin Donut 27Krispy Kreme 7Tim Horton’s 4Local 26
There are 1200 students in the School of STEM. According the following data table, how many of these students take a course in meteorology? Courses Student Participation (%) Meteorology 38 Biology 280 Chemistry 240 Other 100

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