Question: Consider a sample of 100 testscores, with the following frequencydistribution:Score60-6970-7980-8990-99152530255Frequency100What is the cumulative frequency ofscores greater than or equal to 80?

score frequency 60-69 15 70-79 25 80-89 30 90-99 25 100 5

Answered: Question: Consider a sample of 100 test…

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 median of the test scores given in the figure below is: Stem Leaves 667 2359 7 0011689 8. 11568 9. 0225 10 00 56 71 78 90
The median of the test scores given in the figure below is: Stem Leaves 667 6 2359 7 0011689 8 11568 6. 0225 10 00 56 71 78 90
The ages of residents of a small town are given in the following frequency distribution. Approximate the mean age. Round your answer to one decimal place. Class Frequency 0 - 9 281 10 - 19 204 20 - 29 219 30 - 39 258 40 - 49 176 50 - 59 93 60 - 69 23 70 - 79 23 80 - 89 10 90 - 99 3 What is the average mean?
The table below shows the scores of a group of students on a 10-point quiz. Test Score Frequency 3 1 4 1 7 4 8 4 9. 10 2 The mean score on this test is: The median score on this test is: Check Answer
Number of persons in the household 1 2 A. Below is a distribution of the variable "hompop" from the 2016 General Social Survey dataset. This variable is a measure of the number of people in each respondent's household. Use the table to answer the following questions. 3 4 5 7 8 9 10 11 Total www Freq. 850 1,069 436 278 139 58 19 2,867 percent 29.65 37.29 15.21 9.70 4.85 2.02 0.66 0.31 0.24 0.03 0.03 100.00 Cum. 29.65 66.93 82.14 91.84 96.69 98.71 99.37 99.69 99.93 99.97 100.00 1
Data was collected for 224 randomly selected 10 minute intervals. For each ten-minute interval, the number of people entering the atrium of a large mall were recorded. The data is summarized in the table below. Number of Guests Frequency 120 – 124 23 125 – 129 32 130 – 134 97 135 – 139 56 140 – 144 16 What is the class width for this GFDT?
Students were asked, "How stressed have you been in the last week, on a scale of 0 to 10, with 0 being not at all stressed and 10 being as stressed as possible?" The students' responses are shown in the frequency distribution below. Construct a histogram and frequency polygon for the data. Stress Rating 0 1 2 3 4 5 6 7 8 9 10 Frequency 2 1 1 18 19 19 12 27 25 12 11
The highway speeds of 100 cars are summarized in the frequency distribution below. Find the estimated mean speed. Speed (mph) 30-39 40-49 50-59 60-69 70-79 Cars 3. 16 50 18 13 O A. 59.5 mph O B. 62.4 mph O C. 22.8 mph O D. 56.7 mph
2. A coach gave her team a test on sit-ups completed in one minute. Using the data collected, the coach constructed the following frequency distribution: Scores 90-99 80-89 70-79 60-69 50-59 40-49 30-39 20-29 10-19 0-9 a. 9 12 17 13 10 7 3 1 What is the percentile score for a raw score of 38? Show your work. b.) The coach wants to take the top 20% of the team and train them for the World Sit-up Championships. What raw score cut-off would be used to choose the team? Show your work. Note: you can't have part of a person on the team.

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Question: Consider a sample of 100 test scores, with the following frequency distribution: Score 60-69 70-79 80-89 90-99 15 25 30 25 5 Frequency 100 What is the cumulative frequency of scores greater than or equal to 80?