14. Compute the weighted averages of the six(6) CPA examinees below up to two(2)decimal places? Who passed?Subjects1 (I unit)2 (1 unit)3 (2 units)4 (2 units)5 (2 units)AmyBenCoyDanEmyFam60706095759580708095759580708095759580707570759580757570756 (2 units)8075607075

Given, Subjects Amy Ben Coy Dan Emy Fam 1 (1 unit) 60 70 60 95 75 95 2 (1 unit) 80 70 80 95…

Answered: 14. Compute the weighted averages of…

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 grade for an elementary statistics 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 54 72 88 62 74 43 60 78 89 76 76 48 84 90 15 79 34 67 17 82 82 74 63 80 85 61 Compute for the following: Use at most 2 decimal places for your final answer/s class width: mean of grouped data: median of grouped data: mode of grouped data: range of of grouped data: sample standard deviation of grouped data: coefficient of variation of grouped data: Compute for the following: Use at most 2 decimal places for your final answer/s class width: | mean of grouped data: median of grouped data: mode of grouped data: range of of grouped data: sample standard deviation of grouped data: coefficient of variation of grouped data: quartile deviation of grouped data: mean deviation of grouped data: kurtosis of of grouped data:
a. The following data shows the results for 20 students in one of the post graduate unit. 42 66 67 71 78 62 61 76 71 67 61 64 61 54 83 63 68 69 81 53 Based on given information compute, (1)Mean, median and mode. (2)Compute 1st and 3rd quartiles. (3)Compute and interpret 90th percentile. b. Explain what is inferential statistics with relevant examples.
1. Ten subjects were chosen for an experiment. They were asked to perform a certain physical activity. The number of heartbeats per minute, before and after experiment are recorded as follows: Subject Before After Subject Before After number number 1 60 92 72 76 2 67 79 7 71 73 72 72 8 69 81 4 71 80 75 80 68 72 10 68 76 Is there sufficient evidence to indicate that the experiment condition increases the number of heartbeats per minute? Use a .05 level of significance.
4. Which one of the following data sets has more than one mode? O A. (10, 20, 30, 30, 40, 50, 50) O B. (10, 20, 30, 40, 50, 70, 70) O C. (20, 20, 30, 30, 30, 40, 40) O D. (10, 20, 30, 40, 50, 60, 70)
The distribution of yearly income of people (thousand $) was as follows: Class <31 31-40 41-50 51-60 61-70 71-30 81-90 91-100 101-110 111-120 Frequency 7 13 5 12 23 7 10 4 14 3 Find the mean, median, and mode for the given data
3. Calculate mean and median of the following. Income (Rs) 10-20 20-30 30-40 40-50 50-60 60–70 No. of workers: 15 20 20 10 5
4. A set of data has a five number summary of: 10 30 35 40 70 Which of the following is the inter-quartile range (IQR) of this data set? Group of answer choices 35 15 10 60
Let’s talk about grades. Below is a collection of grades randomly selected from the students taking a statistics final exam administered to all students taking statistics at one college in one particular year. 69 70 70 72 73 73 76 77 77 7878 79 80 80 8081 82 82 83 8488 89 92 93 94 1. The 25 student scores above would represent... A.a sample statistic B.a parameter C.a census D.a population E.a sample 2.The professor wants to analyze the results of these grades. Find the median grade for the students. 3.Assume that the distribution is approximately normal with a mean and standard deviation of 80 and 7 respectively. What is the probability that a student would score higher than a 90 on the final? 4.
(ii) The lecturer wishes to compare the average scores for Business Statistics between the accounting students and the finance students. He records the marks of a group of 8 students from each course in the following table. Student Accounting course Finance course 78 54 56 95 3 67 68 4 49 71 88 82 76 7 8 62 74 86 85 57 Test at 5% level of significance whether the average score for Business Statistics is different between accounting students and finance students.
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6. A study of report writing by psychologist is conducted. A scale that measures the intelligibility of psychologist English is devised. This scale, called an "index of confusion" is devised so that low scores indicate high readability. These data are obtained on articles randomly selected from psychology journals and from unpublished reports written in 2015. Unpublished reports 2.39 Journals 1.79 1.75 1.67 1.65 2.51 2.86 2.14 1.87 1.75 1.94 2.56 2.29 2.49 1.62 2.06 1.33 2.36 2.58 2.33 1.96 1.69 1.70 2.62 2.41 1.94 a. Test the appropriate hypotheses. b. Does there appear to be a difference between u, and u, ? Explain.

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