What is the correlationcoefficient from the givendata below? (Round off youranswer to 4 decimal places.)The following are test scores of 10 students in abstract reasoning (X) and arithmetic (Y).100 9579 8990 100 8878 85 748090807055405088 5072Y

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Answered: What is the correlation coefficient…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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Answer to part d
The stem-and-leaf display below gives the test scores for the students in Prof. Ramirez's 10 a.m. and 11 10 a.m. class and 23 students in the 11 a.m. class. Use the display to answer the questions that follow. Test scores for Prof. Ramirez's economics classes 10 a.m. 11 a.m. 9 87 425 8632 589 7775551 06002489 9 854 7 4 55 679 78025578 95 Key: 47 + - 7|4 |2 42 (a) What were the ranges for the two classes? 10 a.m. 11 a.m. (b) Which class had the higher median score? o10 a.m. o11 a.m. OThe medians were the same (c) Which class had more scores in the 50s? 10 a.m. o11 a.m. OEach had the same
What is the relationship between the attendance at a major league ball game and the total number of runs scored? Attendance figures (in thousands) and the runs scored for 12 randomly selected games are shown below. Attendance 55 11 36 57 23 11 24 49 11 37 48 49 Runs 7 -0 9 9 5 5 6 7 2 5 6 10 Use the model to predict the runs scored at a game that has an attendance of 39,000 people.Runs scored = (Please round your answer to the nearest whole number.) Interpret the slope of the regression line in the context of the question: Please select from the following. For every additional thousand people who attend a game, there tends to be an average increase of 0.13 runs scored. As x goes up, y goes up. The slope has no practical meaning since the total number runs scored in a game must be positive. Interpret the y-intercept in the context of the question. Please select from the following.: The average runs scored is predicted to be 2. If the attendance of a baseball game…
The following table presents the intelligence quotients of runaway boys. Intelligence Quotient Number 30 - 39 40 - 49 50 - 59 60 - 69 70 - 79 80 - 89 90 - 99 100 - 109 6 60 140 184 139 78 37 110 - 119 14 What does the computed data tell about the IQ of runaway boys?
Applying the Concepts and SkillsStudy Time and Score. An instructor at Arizona State University asked a random sample of eight students to record their study times in a beginning calculus course. She then made a table for total hours studied (x) over 2 weeks and test score (y) at the end of the 2 weeks. Here are the results. x 10 15 12 20 8 16 14 22 y 92 81 84 74 85 80 84 80 Study Time and Score. Following are the data on total hours studied over 2 weeks and test score at the end of the 2 weeks from Exercise 15.27. x 10 15 12 20 8 16 14 22 y 92 81 84 74 85 80 84 80 a. At the 1% significance level, do the data provide sufficient evidence to conclude that a negative linear correlation exists between study time and test score for beginning calculus students?b. Repeat part (a) using a 5% significance level.
Net assets for the 50 packaged beverage companies represent a median value of $ 10 million. Examples of 10 carbonated beverage companies from 50 packaged beverage companies are as follows (table below): Company Net Asset ($ million) A 6.1 B 11.7 C 22.4 D 9.6 E 9.6 F 14.5 G 15.0 H 6.6 I 6.9 J 4.9 Using the median, can we conclude that the ten carbonated beverage companies have less net assets than packaged beverage companies' net assets? use:a. What is the hypothesis for this test? b. Determine the p-value? What's your conclusion?
[CLO-1] Find the median of the data set (1,2,3,6,11} 0 3 O 4.5 0 6 O 2
H.W(3) For the data below: 6.3, 7.0, 7.5, 9.0, 7.7, 7.8, 7.1, 8.1 6.6, 7.2, 8.3, 8.5, 6.9, 7.7, 8.0, 7.3 8.6, 7.1, 8.7, 6.4, 7.7, 7.4, 8.0, 7.6 7.5, 7.2, 7.5, 8.8, 7.8, 7.9, 7.3, 7.0 6.8, 8.1, 8.4, 6.7, 7.1, 8.2, 8.1, 7.7 1. Create a frequency table. 2. Plot histogram and polygon 3. Plot Ascending and descending cumulative frequency.
Find Q1, the median, Q3, and the IQR for the data shown below. (Exclude the median from the lower half and from the upper half of the data.) 14 17 18 23 24 48 55 56 68 76 88 Q1 Median= Q3 = IQR = %3D
A food truck owner recorded the temperature at noon, in degrees Fahrenheit, and the number of bowls of soup sold during the lunch hour for a random sample of 5 days. The data are shown in the following table. Temperature (degrees Fahrenheit) 57 75 43 68 67 Number sold 17 12 20 8 13 The mean temperature of the sample is 62 degrees Fahrenheit, and the mean number sold is 14. What is the correlation between the temperature and the number sold? A -0.85 B -0.68 0.68 D 0.73 E 0.85
The table shows… coefficient correlation

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What is the correlation coefficient from the given data below? (Round off your answer to 4 decimal places.) The following are test scores of 10 students in abstract reasoning (X) and arithmetic (Y). 100 95 78 85 74 79 89 90 100 88 Y 80 90 80 70 55 40 50 88 50 72