Monthly salary of employees302826242220181614-121040.5000 10,000 15,000 20,000 25,000 30,000Monthly Salary in USD4. The histogram below shows data on monthly salaries at a small engineering firm.(a) How many employees are there?(b) What percentage of employees make less than $10,000 per month?(c) Write a sentence or two describing what is revealed by the graph.Number of employees

Solution: a) Class Number of employee 0-5000 12 5000-10000 28 10000-15000 22 15000-20000…

Answered: Monthly salary of employees 30 28- 26…

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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Background: Morris Saldov conducted a study in Eastern and Central Newfoundland in 1988 to examine public attitudes towards social spending. In particular, the study tried to determine if knowing someone on public assistance (yes, no) affected one's views on social spending (too little, about right, too much). The data from the study is summarized in the table below. Too little About right Too much Total Source: Morris Saldov, Public Attitudes to Social Spending in Newfoundland," Canadian Review of Social Policy, 26, November 1990, pages 10-14. Directions: Conduct a chi-square test for independence to determine if the association between knowing someone on public assistance and views on social. spending is statistically significant. Yes No No 42 7 1. Choose the correct null and alternative hypotheses. O Ho: There is no association between knowing someone on public assistance and views on social spending. Ha There is an association between knowing someone on public assistance and views…
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lecture(12.9d): identify the following variables as categorical or numerical: (a) The age of children in months who have completed Peabody Vocabulary test. (b) The amount of time that children spent watching TV. (c) The type of program that children watch on TV.
Could you please tell me if my work is correct? Forbes magazine published data on the best small firms in 2012. These were firms which had been publicly listed for at least a year, have a stock price of at least $5 per share, and have reported annual revenue between $5 million and $1 billion. The table shows the ages of the chief executive officers for the first 60 ranked firms. Age Frequency Relative Frequency Cumulative Relative Frequency 40–44 3 0.05 0.05 45–49 11 0.18 0.23 50–54 13 0.22 0.45 55–59 16 0.27 0.72 60–64 10 0.17 0.88 65–69 6 0.10 0.98 70–74 1 0.02 1.00 Total: 60 1 How I got the calculations: Age Frequency Relative Frequency Cumulative Relative Frequency 40–44 3 =F10/F17 =G10 45–49 11 =F11/F17 =H10+G11 50–54 13 =F12/F17 =H11+G12 55–59 16 =F13/F17 =H12+G13 60–64 10 =F14/F17 =H13+G14 65–69 6 =F15/F17…
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3190 You're a data analyst for an insurance company. You want to make sure that your employer is not over-paying for car repairs. To investigate this, you bring 31 different cars to two different garages, Bubba's Hubcap Heaven and Repair, and Merle's Motor Shop. Some of the cars need lots of repairs. Some of the cars need very few. By taking each car to both shops, we can directly compare the two sets of prices. Before running your analysis, be sure to look at the data file and verify that each car requires a different amount of repairs, and that prices in one shop are correlated with prices at the other shop. That is, they're in the same ballpark. The question is whether one tends to charge more, on average, than the other. Your task is to use Excel to test the research hypothesis that prices are different in the two shops; the null hypothesis is that prices are equal between the two shops. You test at the alpha = 0.10 significance level. What do you conclude? Are prices the same?…
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