A research firm needs to estimate within 3% the proportion of junior executives leaving large manufacturingcompanies within three years. A 0.95 degree of confidence is to be used. Several years ago, a study revealed that37% of junior executives left their company within three years. To update this study, how many junior executivesshould be surveyed?Multiple Choice8808989951,183

We have to find given sample size...

Answered: A research firm needs to estimate…

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 Census Bureau Web site gives several choices for "average income" in its historical income data. In 2006, the median income of American households was $48,201. The mean household income was $66,570. The median income of families was $58,407, and the mean family income was $77,315. The Census Bureau says, “Households consist of all people who occupy a housing unit. The term ‘family’ refers to a group of two or more people related by birth, marriage, or adoption who reside together.” Identify the reason for mean incomes for households being higher than median incomes for households.
please answer blank questions only and or ones with a red x next to them.
The table below shows the number of employees within a small construction company classified according to their years of experience. Find the standard score for an employee with 20 years of experience? :Choose the correct answer Years of experience 5-10 11-16 17-22 23-28 Employees 8 10 7 4 0.546 0.111 O 0.837 O 0.987 O 0.678 O
In a recent survey, a group of people were asked if they were happy or unhappy with the state of the country. The data are shown in the contingency table below, organized by political party. What is the relative risk of being unhappy with the state of the country for Democrats? Round your answer to two decimal places. Нарру | Unhappy | Total Republican 152 98 250 Democrat 104 146 250 Total 256 244 500 Provide your answer below:
Statistics Question
Researchers examined the influence of a television program on children's aggressiveness. The number of aggressive responses was measured during an observation period after viewing the television program. Imagine that the known national average for number of aggressive responses typically performed by children who do not watch television is 6.847. Use the data below to conduct an analysis to determine if the number of aggressive responses on average is different from the national average. The data for this study can be found below, answer questions based on data. What is the null and alternative hypotheses in words and symbols? Is the assumption(s) met? Please explain your answer and proceed with the analysis even if the assumption(s) is not met. What do you conclude from your analysis? Based on your response in “c” above, identify and explain the type of error you could be making. responses 9 4 11 12 14 7 12 10 11 8 14 12 8 12 7 10 10 9 5…
In politics, marketing, etc. we often want to estimate a percentage or proportion p. One calculation in statistical polling is the margin of error - the largest (reasonble) error that the poll could have. For example, a poll result of 72% with a margin of error of 4% indicates that p is most likely to be between 68% and 76% (72% minus 4% to 72% plus 4%). In a (made-up) poll, the proportion of people who like dark chocolate more than milk chocolate was 39% with a margin of error of 1.3%. Describe the conclusion about p using an absolute value inequality. The answer field below uses the symbolic entry option in Mobius. That lets you type in a vertical bar | to represent absolute values. Also, when you type in < and then =, the symbolic entry option will automatically convert that to ≤ . In the same way, if you type in > and then =, the symbolic entry option will automatically convert that to ≥. Be sure to use decimal numbers in your answer (such as using 0.40 for 40%).
A newspaper infographic titled "Social Media Jeopardizing Your Job?" summarized data from a survey of 1,800 recruiters and human resource professionals. The infographic indicated that 51% of the people surveyed had reconsidered a job candidate based on his or her social media profile. Assume that the sample is representative of the population of recruiters and human resource professionals in the United States.Use the given information to estimate the proportion of recruiters and human resource professionals who have reconsidered a job candidate based on his or her social media profile using a 95% confidence interval. (Use a table or technology. Round your answers to three decimal places.)
The number of credits being taken by a sample of 13 full-time college students are listed below. Find the mean, median, and mode of the data, if possible. If any measure cannot be found or does not represent the center of the data, explain why. 5 78 856 4 4 4 4 4 4 5 Find the mean. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. OA. The mean is. (Type an integer or decimal rounded to one decimal place as needed.) OB. The data set does not have mean. Does the mean represent the center of the data? OA. The mean represents the center. OB. The mean does not represent the center because it is the smallest data value. OC. The mean does not represent the center because it is the largest data value. OD. The mean does not represent the center because it is not a data value. O E. The data set does not have a mean. Find the median. Select the correct choice below and, necessary, fill in the answer box to complete your choice. OA. The median is.…
Determine whether the underlined number is a statistic or a parameter. in a study of all 4622 professors at a college, it is found that 40% own a television.
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