and(ii) mean ± 2o,26 25. Find the proportion of items lying within : (i) mean foof the following distribution.ClassFrequencyClassFrequency11-12521-2239513-1442623-243815-1672025-268.17-1874127-2819-2066529-307.

Answered: Image /qna-images/answer/751de315-63d1-48fe-9844-4f55ad7a73a1.jpg

Answered: 20 25. Find the proportion of items…

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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(c) Determine if the means of samples 1 and 2 overestimate, underestimate, or are equal to the population mean. The mean pulse rate of sample 1 the population mean. The mean pulse rate of sample 2 the population mean.
Approximate the mean for following GFDT. Data Frequency 30 - 34 12 35 - 39 23 40 - 44 10 45 - 49 11 50 - 54 4 55 - 59 7 60 - 64 4 65 - 69 1 70 - 74 1 mean = Report answer accurate to one decimal place.
8:58 b Ь O * G 70% For items 25 - 30, consider the frequency distribution of the Age of Employoes of MTF Ine. Complete the table below to answer some of these items. Clas Interval (C. L) Frequency Class Boundaries (C.B.) ef 21 - 26 12 25-27 27 - 32 33 - 38 18 45 - 50 25. What is the range of the given set of data? A. 5 B. 6 C.7 26. How many mployes have age more than 32.5? A. 29 B. 44 C. 59 D. 61 27. What is the positive difference between the kowest upper boundary and the lower boundary of the modal class A. 5 C.7
For numbers 9 to l1, use the grouped frequency distribution below. Class Interval Frequency 50–54 4 45-49 40–44 8 35-39 30-34 3 25-29 20-24 2 9. What is the mode? А. 40 В. 42 C. 43 D. 44 10. What is thẻ mean? А. 39.17 B. 40.17 C. 41.17 D. 42.17 11. What is the median? А. 39.38 B. 40.28 C. 41.38 D. 42.38
Examine the frequency distribution. What is the width of a class in this frequency distribution? Enter your answer as a number, like this: 42
2. Using the frequency/percentage distribution table below to find the median, 12t percentile, 25th percentile (1" quartile), 75th percentile (3rd quartile) and inter-quartile range (1QR) for the variable "mumber of rooms in respondents' home or apartment." Write one sentence interpreting each statistics. Number of rooms Cumulative Frequency Percent Valid Percent Percent Valid 153 room 7 .8 .8 244 1.2 1.2 2.0 3 968 4.7 4.9 6.9 2507 12.1 12.8 19.7 3758 18.1 19.1 38.8 3972 19.1 20.2 59.1 2965 14.3 15.1 74.2 2186 10.5 11.1 85.3 1146 5.5 5.8 91.1 10 868 4.2 4.4 95.5 11 373 1.8 1.9 97.4 12 217 1.0 1.1 98.5 13 77 4 4 98.9 14 35 2 99.1 15 22 .1 .1 99.2 16 15 .1 .1 99.3 17 47 2 99.5 18 40 2 99.8 19 30 .1 99.9 20 9 .0 .0 99.9 21 5 100.0 22 .0 100.0 Total 19642 94.4 100.0 Missing N/A 1160 5.6 Total 20802 100.0
2. Median Home Value | school rating 300 2 500 7 600 8 900 7.5 990 10 Find the predicted median home value change when school rating moves from 5 to 7.
Find the mean of the grouped frequency distribution. Interval Frequency 0-9 4 10-19 20-29 30-39 40-49 50-59 5 10 9 3 1 ESS D What is the mean of the grouped data? (Round to the nearest hundredth as needed.)
The ages of a random sample of motorcyclists when they were fatally injured in traffic crashes were recorded and tabled below: Age (in years) Below 16 1628 28 - < 40 40 - < 52 52 - < 64 64 - <76 B. 0.55 C. 0.44 Frequency 0 2 6 10 13 5 D. 0.50 Midpoints The relative frequency of motorcyclist's aged between 20 and 50 who were fatally injured in traffic crashes is (rounded off to two decimals): A. 0.38 22 34 46 58 70 Cumulative freq. 0 2 8 18 31 36
Calculate the Mean for the following frequency distribution. Round the result of the mean to two decimal places. Límit Frequency 100 - 110 24 111 - 121 36 122 - 132 22 133 - 143 11 144 - 154 9 155 - 165 24
A. Use the frequency distribution below to answer the following questions. 1. What is the lower class boundary Scores of students in a 50- item Math test for the interval 31 – 35? Scores Frequency (f) 2. What is the total frequency of the 11 – 15 1 given data? 16 – 20 21 – 25 4 - 3. What should be the value of less 26 – 30 31 – 35 7 than cumulative frequency to be used 36 – 40 10 if kth decile falls under class interval 41 – 45 9. 36 – 40? 46 – 50 3 4. In what class interval does 3rd quartile belongs? 5. What class interval should be used to get the 55th percentile?
d. Population size e. Shape of the distribution f. Is this variable discrete or 40-49.9 15 50-59.9 10 60-69.9 continuous? g. Make a histogram or a bar chart (as appropriate) for this data. 70-79.9 1 2. A researcher visited 29 randomly selected Starbucks locations and recorded the number of cappuccinos sold at each coffee shop on March 22. He summarized the data in the following frequency distribution table: For this scenario, identify the following: 1. Variable 2. Individual (Subject) 3. Sample 4. Sample size 5. Class (bin) width 6. Is the variable discrete or Variable Frequency 5-9 10-14 15-19 8. 20-24 10 continuous? 25-29 4 7. How many Starbucks locations sold at least 10 cappuccinos? 8. What percent of Starbucks locations sold at least 10 cappuccinos? 3. This table presents the price distribution of shoe styles offered by an online outlet. Variable FreguencyY 2.

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20 25. Find the proportion of items lying within: (i) mean fo and (ii) mean ± 2ơ, of the following distribution. Class Frequency Class Frequency 11-12 21-22 395 13-14 426 23-24 38 15-16 720 25-26 8. 17-18 741 27-28 19-20 665 29-30 7.