THINKING/INQUIRY5.aAll students at Redmond and Power take a certain exam. The mean scores forboys, girls, and for boys and girls combined at the two schools are shown in thetable, as is the mean for boys at the two schools combined. If the exact meanscore for the girls at the two schools combined is a/b, where a and b are relativelyprime, find a+b.BoysGirlsBoys and GirlsRedmond Power Redmond + Power80908268767276a/b

The mean of x with size n is defined as follows: x=∑i=1nxin The combined mean of the two groups with…

Answered: All students at Redmond and Power take…

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 boxplot below displays the average number of jumbo marshmallows consumed in eating contests across a particular state. The higher outlier is from a professional, heavyweight contest, and the lower outliers are from children's eating contests.What effect will removing all outliers have on the mean and median of the data set? Neither the mean nor the median will change. The median will change and the mean will increase. The median will change and the mean will decrease. or The mean will remain unchanged and the median will increase.
a. Find the mean, median, and range for each of the two data sets. Find the mean, median, and range for faculty parking. mean=nothing median=nothing range=nothing Faculty: 3 4 2 1 2 3 5 4 4 3 2 Student: 9 10 12 6 11 14 5 8 10 14 13
Tia helps run her school's concession stand during football games. Over the course of the season, she tracks how many hamburgers and hotdogs are sold at each game and records the data in the table below. Hamburgers Hotdogs Sold Sold 30 8 28 25 29 25 18 13 22 23 20 Based on the data, which statement is true? O The mean number of hamburgers sold is less than the number of mean hotdogs sold. O The mean number of hamburgers sold is greater the mean number of hotdogs sold. O The median number of hamburgers sold is less than the median number of hotdogs sold. O The median number of hamburgers sold is greater the median number of hotdogs sold.
The accompanying data set lists diastolic blood pressure measurements (mm Hg) of females. All of the values are even numbers. Construct a stemplot. Identify the two values that are closest to the middle when the data are sorted in order from lowest to highest. (These values are often used to find the median.) 64 92 76 84 68 64 70 64 80 66 90 66 76 64 68 66 74 78 60 80 66 70 82 88 ... Construct the stemplot. Clear all Check answer Get more help - Ecc 2:57 AM 36°F Clear 3/28/20
A running coach wants to know if participating in weekly running clubs significantly improves the time to run a mile. The running coach collects mean mile times for 42 runners who participate in weekly running clubs with 54 runners who do not run in clubs. The running coach measures times in January and June of the same year. All times are in seconds, and the runners all started with mile times between 8 minutes (480 seconds) and 9 minutes (540 seconds). Here are the results: (table) The running coach investigates if runners in a running club improve times more than runners not in a club. The running coach conducts a hypothesis test for the difference in sample mean change (“Running Club” minus “Not in a Club”). Here are the results: T-value = 2.7027, p-value = 0.0043, DF = 74 95% Confidence Interval (0.5254, 3.4746) Which of the following can the running coach conclude? Runners who participate in running clubs have a statistically significant change in running times when compared…
Consider the following table. Compare the mean, median, and mode of all of the exam scores with the mean, median, and mode of the exam scores removing the one score of zero. Which measure of average is most affected by eliminating the score of zero? Mean Median Mode Exam scores including score of zero 58.6 80 80 Exam scores without the score of zero 81.7 81 80
For each of the states and Puerto Rico, the histogram below shows the average property damage (in millions of dollars) caused by tornadoes over a 50 year period. Which of the following statements is TRUE with regards to the relationship between the mean and the median? Average Tornado Damage for the 50 States and Puerto Rico (1950-1999) Average property damage (Smallions) O The median is greater than the mean. The median is less than the mean. O There is no way of knowing what kind of relationship the mean and median have. O The median is equal to the mean.
A student earned grades of 74, 75, 79, and 91 on her four regular tests. She earned a grade of 75 on the final exam and 84 on her class projects. Her combined homework grade was 86. The four regular tests count for 40% of the final grade, the final exam counts for 30%, the project counts for 10%, and homework counts for 20%. What is her weighted mean grade? 80.0 80.6 80.5 81.1
A math professor is wondering if students today are better or worse than in the past. He has given the same final to this year's class that he gave ten years ago. Compute mean, median, and mode for both classes and write a paragraph summarizing the differences. This Year 35 45 65 75 87 80 69 71 53 90 99 95 70 82 73 93 67 61 57 74 72 77 71 81 83 Ten Years Ago 56 77 75 76 59 74 51 89 55 79 67 77 69 91 68 90 65 79 69 79 87 86 98 91 95
Suppose there are 5 students in a room. The mean age is 19.8 years, and the median age is 19. If the youngest person leaves and is not replaced by another person, what happens to the mean and the median? O The mean and median increase. The mean increases, and the median either increases or stays the same. The mean increases, but it is impossible to determine whether the median increases, decreases, or stays the same. The mean increases, and the median stays the same. The median increases, and the mean either increases or stays the same.
The data below are the frequency of cremation burials found in 17 archaeological sites. a. Obtain the mean, median, and mode of these data. b. Which measure of center do you think works best here? 83 69 44 49 516 34 33 281 2340 44 371 27 89 430 58 242 122 a. The mean is

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