A survey was administered to determine whether educational attainment and teaching efficiency rating arerelated. A total of 110 college faculty members were taken from a certain private university in Tuguegarao City anthe results are shown below. Use 0.05 level of significance.Teaching Efficiency ratingEducationalExcellentGoodFairРorТОTALAttainmentEEEEDoctor's Degree261073Master's Degree4420153Bachelor's Degree78401015TОTAL37322714110note: Write your answer up to TWO DECIMAL PLACES.

Answered: A survey was administered to determine…

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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8,9,10,11,12,13
To investigate if female executives in a very large fortune 500 company are experiencing pay-discrimination: A researcher samples the incomes of 300 male and 300 female executives from that corporation. 1.) Which statistic would you use to test the income difference between male and female executives? 2.) What additional information do you need to calculate this statistic?
A research scientist wishes to test the claim that the mean number of children per classroom in California elementary school is less than 35. She selects a simple random sample of 42 California elementary school classrooms. Are the requirements to test the claim met? Explain in 1 - 2 complete sentences.
Does the type of instruction in a college statistics class (either lecture or self-paced) influence students’ performance, as measured by the number of quizzes successfully completed during the semester? Twelve students were recruited for the study. Students received the lecture instruction or a self-paced instruction. The total number of quizzes completed during teach type of instruction appear below.
A professional marketing survey involves product recognition in New York and California. Of 558 New York residents surveyed, 193 knew the product while 179 out of 614 Californians knew the product. 1. Test the claim that the recognition rates are greater in New York. 2. In which state does the product need the most help with name recognition? Use the given data to compare mean age of residents in Seaside and Marina. Sample Data * = 43.2 yr s = 4.7 yr n = 97 Seaside Before After 1. Test the claim that the mean age of seaside residents is equal to the mean age of Marina residents. 2. How would the result change if we use a = 0.01? Matched Pairs: Write the alternative hypothesis H₁, for each claim: 1. New engine management software will increase the gas mileage in your car. 2. My coaching will reduce your golf score. Difference An instructor gives a test before and after a lesson with these results from randomly selected students Before and After Data 54 70 = 61 Marina 56 s = 6.7 year…
People were asked their gender and if the preferred Coke or Pepsi. The results are summarized in the table below. Test the claim that gender and soda preference are independent. Please provide the critical value, test statistic and conclusion. Coke Pepsi Male 53 26 Female 58 29
Explain the concept of Measurement Error and Errors-in-Variables Bias with suitable example?
which statistical analysis correctly analyzes the repeated measures (also known as within subjects) design?
The United States Census Bureau determined that the mean number of children in an American household is 1.86. Polls of 15 households were conducted in a certain city. 1) What is the number of degrees of freedom?
The admisnistrators of Rowan university wants to know more about the knowledge of students regarding international events. They are concerned that their students are uninformed with regards to the news from other countries. When a standardized test is used to assess the knowledge of all students at al US universities about world events, it is reported that the national mean. A sample of 35 students from Rowan university are tested and the sample mean is 58 and the standard error is 3.2. The 99 percent confidence interval of population mean knowledge of the students at Rowan university has to be determined. 8. The variance of the national accounting examination score is 900. We want to estimate the sample mean score within 5 points of the population mean score with 99% confidence. The sample size of examinees that will be surveyed to meet these conditions is?

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