You may need to use the appropriate appendix table or technology to answer this question.Recall the method used to obtain a confidence interval for the difference between two population means for matched samples.(a) The following data are from matched samples taken from two populations. Compute the difference value for each element. (Use Population 1 - Population 2.)PopulationElement1Difference1118783964121310615151514(b) Compute d.(c) Compute the standard deviation s. (Round your answer to two decimal places.)(d) What is the point estimate of the difference between the two population means? (Use Population 1 - Population 2.)(e) Provide a 95% confidence interval for the difference between the two population means. (Use Population 1 - Population 2. Round your answers to two decimal places.)to

Answered: Image /qna-images/answer/fc878573-742c-46ce-ad63-b65c8ee5c865.jpg

Answered: (a) The following data are from matched…

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 following scores represent the final examination grades for an elementary statistics course (treated as population): 23 60 79 32 57 74 52 70 82 36 80 77 81 95 41 65 92 85 55 76 52 10 64 75 78 25 80 98 81 67 41 71 83 54 64 72 88 62 74 43 60 78 89 76 84 48 84 90 15 79 34 67 17 82 69 74 63 80 85 61 (a) Construct a stem-and-leaf display representing the given data set. Use the tens digits for the stem. (b) Construct a frequency distribution table for the given data set. Use class size of 10 and start from 10 (i.e. 10-19, 20-29 etc.). (c) Determine the following summary measures considering the provided frequency distribution from (b):
Which of the following statements is NOT correct about effects of scale changes for a data set? O a. When a constant of 3 is multiplied with every score value, the variance will increase by 9 Ob. When a constant of 3 is added to every score value, the variance will not change c. When a constant of 3 is multiplied with every score value, the standard deviation will increase by 3 d. When a constant of 3 is added to every score value, the standard deviation will increase by 3
In a study on running and happiness, runners indicated the number of miles they ran in a day and their subsequent score on a Happiness Survey (higher score = greater happiness). Runner # of miles (x) Happiness Score (y) 1 16 12 2 4 3 12 14 4 2 8 For these data: The mean of miles run is: 8.50 The mean of the Happiness scores is: 10.00 The standard deviation of the Miles scores is: 5.72 The standard deviation of the Happiness scores is: 3.16 In your submission, please include a copy of the SPSS or Excel output and answer the following: A. What is the r and r? value? B. Based on Pearson's r and r2 value, describe the relationship (direction/strength) that exists between # of miles run and Happiness scores. C. Create a scatterplot for the data using Excel or SPSS (include output in your submission). D. Insert the prediction line from Excel/SPSS on your scatterplot.
Example 11. Find the mean deviation from (i) mean and (ii) median for the following data: Marks : 20 18 16 14 12 10 8 6 No. of Students : 2 4 18 27 25 14 1 Also calculate coefficient of variation.
A team of ten (10) construction workers who are working on a project are classified according to the skill levels, Classes A to D. The table below shows the number of workers in each of the four (4) classes and their respective hourly pay-rate. Pay-rate (Rands/hour) Number of workers Class A 80 Class B 60 Class C 55 Class D 50 4. Calculate the mean hourly pay-rate for the 10 workers. A. R24.50/hour B. R57/hour C. R57.50/hour D. R61.75/hour
I need help with #15
Which of the following phrases correctly defines population variance? square of the average differences of data entries of the population from the mean squared difference of the average of data entries of the population from the mean average difference of the square of data entries of the population from the mean average of the squared differences of data entries of the population from the mean
For the following table represents the statistical data for ages and their frequencies. Find the following: the mean, median, mode, mean absolute deviation, standard deviation, and Coefficient of Variance. 10-12 13-15 16-18 19-21 22-24 25-27 28-30 Age Frequency №: 43 2R 6R 10R 5R IR G: 1 16R 8R R-(N+5+G)
Question 3 The number of hours worked per week for a sample of ten students is shown below. Student Hours 1 39 28 10 16 26 34 38 9. 4 10 32 1. Determine the mean, median, and mode. 2. What is the range of the data for the hours worked? 3. What is the standard deviation for the number of hours worked? 2. 3. 4, 7, 8.
Give the value of the following;a. meanb. medianc. moded. range (using midpoint)e. variancef. mean absolute deviation (MAD)g. standard deviationh. coefficient of variation

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