The scatter plot shows the number of hours worked and money spent on entertainment by each of 24 students. Also shown is the line of best fit for the data.Fill in the blanks below.70656055Amount of50money spent on45entertainment(in dollars)40+35× ☑30+25×2015×105-x×02468 10 12 14 1618 20 22Number of hours workedx(a) For these 24 students, as the number of hours increases, the amount of money spent tends to (Choose one)×(b) For these 24 students, there is (Choose one)correlation between the number of hours worked and the amount ofmoney spent.(c) Using the line of best fit, we would predict that a student working 8 hours would spend approximately(Choose one) ▼

Given : We have the scatter plot for the number of hours worked and money spent on entertainment by…

Answered: The scatter plot shows the number 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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A researcher wants to determine if the exam scores of the students are dependent on the length of time spent in studying the subject. Ten students in a certain class were taken and the results are shown in the table below where X is the time spent in studying the subject in hours and Y is the examination scores. X (time) Y (score) 1.5 80 3.0 83 1.25 83 0.5 70 3.5 85 2.5 75 1.0 70 3.0 90 2.5 86 4.0 91 Determine the simple linear regression equation Y = a + bX. (round off values up to 1 decimal place)
The table below shows the number of state-registered automatic weapons and the murder rate for several Northwestern states. X 11.3 y 13.3 10.9 9.9 8.4 6.8 3.9 2.8 2.4 2.5 7 6.7 6.4 6.3 x = thousands of automatic weapons y = murders per 100,000 residents This data can be modeled by the equation ŷ = 0.79x + 4.32. Use this equation to answer the following. Answer = 12.829 0.9 5 A) How many murders per 100,000 residents can be expected in a state with 10.1 thousand automatic weapons? Answer = 6.123 x Round to 3 decimal places. B) How many murders per 100,000 residents can be expected in a state with 2.7 thousand automatic weapons? x Round to 3 decimal places.
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Use the given data to find the scatter plot, equation of the regression line, and prediction. 4) Managers rate employees according to job performance and attitude. The results for several randomly selected employees are given below. Performance 59 63 65 69 58 77 76 | 69 70 64 Attitude 72 67 78 82 75 87 92 83 87 78 What function do you use to see the scatterplot on the calculator. Scatterplot from the calculator:
The table below shows the number of state-registered automatic weapons and the murder rate for several Northwestern states. 11.5 8.4 6.8 3.4 2.5 2.6 2.6 0.9 13.5 10.9 9.8 6.7 6.3 6.4 4.5 x = thousands of automatic weapons y = murders per 100,000 residents This data can be modeled by the equation 0.83x + 3.99. Use this equation to answer the following; Special Note: I suggest you verify this equation by performing linear regression on your calculator. A) How many murders per 100,000 residents can be expected in a state with 8.4 thousand automatic weapons? Answer Round to 3 decimal places. B) How many murders per 100,000 residents can be expected in a state with 7.3 thousand automatic weapons? Answer Round to 3 decimal places.
The ages (in years) and heights (in inches) of all pitchers for a baseball team are listed. Find the coefficient of variation for each of the two data sets. Then compare the results. heights Ages 73 28 76 22 74 23 72 24 77 24 78 27 76 31 79 28 73 27 78 35 74 33 79 36
The data represent the heights in feet and the number of stories of the tallest buildings in a city. Height, x 793 388 825 404 439 550 931 669 532 Stories, y 57 26 58 31 33 36 60 49 34 Scatter Plot for the Heights (in Feet) and Number of Stories of the Buildings. 90- 50- 40- 30- 20- 10- 100 1200 400 300 700 Part: 0 /3 Part 1 of 3 Find the value for r. Round your answer to at least three decimal places.
A+ F3 # F a. What are the relative and absolute changes in the Charlie Card bus fare? You don't have to do this in your head, without a calculator, but you should be able to. b. Create a spreadsheet for these data, with eight rows (one for each of the eight categories) and three columns, for the category name, the existing fare and the proposed fare. Create a properly labeled bar graph to display the data. c. Label the next two columns appropriately to hold the relative and absolute changes. Fill those columns with Excel formulas to compute the correct values. Do not compute the values elsewhere and enter them in the spreadsheet as numbers. [See the back of the book for a hint.] F4 4 d. Imagine that you are addressing a public meeting about these fare increases. How would you argue that an unfair burden is being placed on people who pay using a Charlie Ticket? How would you argue that senior citizens are most hard hit? 2 (6 14 13) 3 nts - The table below shows the salarestructure of…
E Use a stem-and-leaf plot that has two rows for each stem to display the data, which represent the income (in millions) of 30 of the highest paid athletes. Describe any patterns. 76 45 34 35 36 44 50 35 56 56 44 43 81 53 38 73 68 46 63 38 87 34 34 42 45 58 Determine the leaves in the stem-and-leaf plot below. Key: 313-33 Income ($ millions) 3 What best describes the data? 站 F2 R OA. Most of the incomes are less than 60 million dollars. OB. Most of the incomes are between 50 and 70 million dollars. OC. The incomes are evenly spread between 30 and 90 million dollars. OD. Most of the incomes are greater than 60 million dollars. V % 5 F4 T G B Y H N F5 46 53 U J 37 41 F6 ( 8 M K 9 F8 L P Alt Gr DELL F9 N F10 TE F11 1 T F12 - Intro Power Impant Sleep Pet Sis Insert Blog Despl Wake ONLOFF Supr Inicio
Solve.
Watch the cell division video(https://www.youtube.com/watch?v=KIpcCyuypzg) Fill out the data table.
A high school has 44 players on the football team. The summary of the players' weights is given in the box plot. Approximately, what is the percentage of players weighing greater than or equal to 245 pounds? 191 217 245 164 262 - 0o 150 160 170 180 190 200 210 220 230 240 250 260 270 00 Weight unds) Answer E Tables E Keypad Keyboard Shortcuts % Submit Answer © 2022 Hawkes Learning

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