is the average number of hours the student spent working on math each week andIn the following data,y is the final grade in a math class.hours/weekXGradey659.4976.6965.61180.41485.61475.61578181001897.219100The line of best fit is y = 2.91-x+43.15.What is the predicted value for the final grade when a student spends an average of 13 hours each week onmath?Grade =Round to 1 decimal place.

The question is about regression.Given :x : Average no. of hours the student spent working on math.y…

Answered: In the following data, is the average…

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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2.3
The data below represent the number of wins by 11 major league baseball teams and the team ERA. The owners would like to know if there is a linear relationship between the team ERA (earned run average) and the number of wins in a season. Using the data given, answer the questions below: Team ERA Wins Chicago White Sox 4.4 62 Chicago Cubs 4.8 102 Cleveland Guardians 8.6 50 Cincinnati Reds 6.4 84 Detroit Tigers 14.9 60 Milwaukee Brewers 3.3 135 Kansas City Royals 8.2 59 Pittsburgh Pirates 7.8 58 Minnesota Twins 4.5 105 St. Louis Cardinals 6.7 82 New York Yankees 5.4 95 a. Develop the least squares regression equation. b. Estimate the number of wins for a team with a 6.0 ERA. c. Compute the coefficient of determination. Explain what this means in your own words in the context of the problem. d. Using a t test, complete a hypothesis test to determine whether the…
These are the times, in seconds, that 15 members of an athletics club took to run 800 metres. 139 148 151 140 162 182 154 171 157 142 145 178 132 148 166 (i) Draw a stem-and-leaf diagram of the data. (ii) Find the median, the upper and lower quartiles and the interquartile range. (iii) Draw a box-and-whisker plot of the data.
Sports Riches Avg. Weekly Pay (Thousands of Dollars) 275- 250- 225- 200- 175- 150- 125- 100- 0- F.C. Barcelona (Spain) Soccer $264,533 Average Weekly Pay on Selected Sports Teams Oklahoma City Thunder (U.S.A) Basketball $198.604 Toronto Raptors (Canada) Basketball $191.738 Miami Heat (U.S.A) Basketball $178.094 Manchester United Soccer $165,352 San Francisco Giants (U.S.A) Baseball $141,940 New York Yankees (U.S.A) Baseball $110,787
Please answer the question in the photo. TY!
The comparison line graph indicates the rainfall for the last six months of two different 2013 years in Nowhereville. How many more inches of rain fell in October 2013 than in September 2013? 2014 04 July Aug Sept Oct Nov Dec Month ..... inch(es) (Simplify your answer.) Rainfall (in inches)
The scatter plot shows the relationship between the number of minutes studying for a test (x) and the number of mistakes made (y). The graph shows the scatterplot of the data and a fitted line. 17 16 15 14 13 12 10 용 5- 4- 3- 10 20 30 40 50 60 70 80 90 100 110 120 Select True or False for each statement based on the scatter plot. True/False There is a positive association between the amount of time studying for a test and the number of mistakes made. True False Students who studied for a longer period of time tended to make less mistakes. True False There is a linear association between time True False studying and number of mistakes.
An engineer wants to determine how the weight of a car, x, affects gas mileage, y. The following data represent the weights of various cars and their miles per gallon. C Car Weight (pounds), x Miles per Gallon, y 2630 3095 3305 3655 4150 25.7 24.5 22 22 15.4 (a) Find the least-squares regression line treating weight as the explanatory variable and miles per gallon as the response variable. Write the equation for the least-squares regression line. (Round the x coefficient to five decimal places as needed. Round the constant to one decimal place as needed.) (b) Interpret the slope and intercept, if appropriate. Choose the best interpretation for the' slope. O A. The slope indicates the mean change in miles per gallon for an increase of 1 pound in weight. O B. The slope indicates the mean weight. OC. The slope indicates the mean miles per gallon. O D. The slope indicates the ratio between the ean weight and the mean miles per gallon. hp
Can a low barometer reading be used to predict maximum wind speed of an approaching tropical cyclone? For a random sample of tropical cyclones, let x be the lowest pressure (in millibars) as a cyclone approaches, and let y be the maximum wind speed (in miles per hour) of the cyclone. x 1004 975 992 935 989 928 y 40 100 65 145 80 147 (a) Make a scatter diagram of the data and visualize the line you think best fits the data. (b) Would you say the correlation is low, moderate, or strong? low moderate strong Would you say the correlation is positive or negative? positive negative (c) Use a calculator to verify that x = 5823, x2 = 5,656,235, y = 577, y2 = 64,859 and xy = 553,251 Compute r. (Round your answer to four decimal places.) As x increases, does the value of r imply that y should tend to increase or decrease? Explain your answer. Given our value of r, y…
The range of the set of data below is 20 92,81,84, 79, 76, 95, 75, 82 True O False
using the picture included to answer Besides a bar chart, what would be another appropriate graph to display this data set?
Construct the equation for the line of best fit for the following data set. Draw the line of best fit and label the intercepts. Show all of your work in creating the equation using the intercepts.

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