Temperature, x :99 87 81 91 95 86 94 96 Number of absences, y :14 6...
Temperature, x :99 87 81 91 95 86 94 96
Number of absences, y :14 6 3 6 10 5 7 11
1. Find the equation of the regression line. (Round to 2 decimals)
2. Find the correlation coefficient r. (Round to 3 decimals)
3. State the strength and direction of the correlation that exists.
Homework Answers
1)
2)
3) 0.925 is very close to 1 .it means there is a strong and positive correlation between variables
please like ??
Add Answer to:
Temperature, x :99 87 81 91 95 86 94 96
Number of absences, y :14 6...
weight of 30 people: 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92,...
weight of 30 people:
81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96,
97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109,
110
screenshot of matlab is needed, please and thank you
Create your own data that represents the weight of 30 people.Test the null hypothesis that the data comes from a normal distribution with mean mu = 70 and standard deviation sigma = 8. Hint: use the “ztest"...
The table below gives the number of absences and the overall grade in the class for...
The table below gives the number of absences and the overall grade in the class for five randomly selected students. Based on this data, consider the equation of the regression line, yˆ=b0+b1xy^=b0+b1x, for using the number of absences to predict a student's overall grade in the class. Keep in mind, the correlation coefficient may or may not be statistically significant for the data given. Remember, in practice, it would not be appropriate to use the regression line to make a...
Midterm1 = (83.33, 98.33, 75, 91.67, 96.67, 95, 86.67, 65, 100, 100, 80, 88.33, 96.67, 96.67,...
Midterm1 = (83.33, 98.33, 75, 91.67, 96.67, 95, 86.67, 65, 100,
100, 80, 88.33,
96.67, 96.67, 90, 96.67, 86.67, 93.33, 80, 91.67, 98.33, 86.67, 85,
86.67, 95,
83.33, 96.67, 81.67, 98.33, 100, 95, 93.33, 91.67, 88.33, 98.33,
93.33, 98.33,
93.33, 85, 88.33, 100, 98.33, 96.67, 90, 86.67, 100, 96.67, 98.33,
90, 96.67,
86.67, 95, 78.33, 86.67, 100, 81.67, 96.67, 91.67, 96.67, 96.67,
95, 96.67, 73.33,
100, 93.33, 96.67, 88.33, 70, 96.67, 96.67, 100, 88.33, 96.67, 100,
88.33, 100,
78.33, 93.33,...
Question 10 - of 17 Step 6 of 6 00:43:59 The table below gives the number...
Question 10 - of 17 Step 6 of 6 00:43:59 The table below gives the number of hours spent unsupervised each day as well as the overall grade averages for seven randomly selected middle school students. Using this data, consider the equation of the regression line, ġ = bo +bix for predicting the overall grade average for a middle school student based on the number of hours spent unsupervised each day. Keep in mind, the correlation coefficient may or may...
The table below gives the number of hours ten randomly selected students spent studying and their...
The table below gives the number of hours ten randomly selected students spent studying and their corresponding midterm exam grades. Using this data, consider the equation of the regression line, yˆ=b0+b1x, for predicting the midterm exam grade that a student will earn based on the number of hours spent studying. Keep in mind, the correlation coefficient may or may not be statistically significant for the data given. Remember, in practice, it would not be appropriate to use the regression line...
Boats (tens of thousands) Manatees 66 55 65 38 69 34 67 49 74 42 75 59 78 53 84 69 81 82 87 79 90 81 94 93 92 74 98 67 99 78 102 91 100 73 98 91 97 97 93 82 8...
Boats (tens of
thousands) Manatees
66 55
65 38
69 34
67 49
74 42
75 59
78 53
84 69
81 82
87 79
90 81
94 93
92 74
98 67
99 78
102 91
100 73
98 91
97 97
93 82
88 89
87 80
90 71
92 68
idrresponding numbe o ms for 880.000 registered Use the accompanying paired data consisting of registered boats (tens of thousands) and manatee fatalities from boat encounters. Let x...
100 96 24 2000 = 100 18 90 88 95 84 1966 1967 1968 1969 1990...
100 96 24 2000 = 100 18 90 88 95 84 1966 1967 1968 1969 1990 1991 1992 1993 1994 1995 196 197 198 1999 2000 2001 2002 2003 2004 2005 2005 Year Source: Statistics Canada's Internet Site, http://estat.statcan.ca/cgi-win/cnsmcgi.exe, CANSIM table 387-000 V28546044, December 16, 2007. a. By approximately how many index points did the CPI change from 1990 to 2003? b. Express this change as a percent to the nearest hundredth. Is this change an increase or decrease in...
the number of bird specie living in an industrial region have been declining during the past...
the number of bird specie living in an industrial region have been declining during the past thirty years. Here are the number of bird specie inhabiting the region from 1960 to 1984. Year 1960 1963 1966 1969 1972 1975 1978 1981 1984 Species 132 129 122 104 102 105 94 81 70 1)Give the equation of the least square regression line of the number of species 2)Find the predicted number of species in 1987. 3)Give the correlation coefficient and coefficient...
The following data represents the number of days absent and the final grade for a sample...
The following data represents the number of days absent and the final grade for a sample of college students in a general education course at a large state university. 0 1 2 3 4 5 6 7 8 9 No. of absences Final Grade 89.2 86.4 83.5 81.1 78.2 73.9 64.3 71.8 65.5 66.2 a) Which variable is the explanatory variable? b) Draw a scatter plot and describe your scatter plot (Direction, Strength, Form). c) Compute the correlation coefficient d)...
1. The following data represents the number of days absent and the final grade for a...
1. The following data represents the number of days absent and the final grade for a sample of college students in a general education course at a large state university. No. of absences 0 1 2 3 4 5 6 7 8 9 Final Grade 89.2 86.4 83.5 81.1 78.2 73.9 64.3 71.8 65.5 66.2 a) Which variable is the explanatory variable? b) Draw a scatter plot and describe your scatter plot (Direction, Strength, Form). c) Compute the correlation coefficient....
weight of 30 people:
81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96,
97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109,
110
screenshot of matlab is needed, please and thank you
Create your own data that represents the weight of 30 people.Test the null hypothesis that the data comes from a normal distribution with mean mu = 70 and standard deviation sigma = 8. Hint: use the “ztest"...
Midterm1 = (83.33, 98.33, 75, 91.67, 96.67, 95, 86.67, 65, 100,
100, 80, 88.33,
96.67, 96.67, 90, 96.67, 86.67, 93.33, 80, 91.67, 98.33, 86.67, 85,
86.67, 95,
83.33, 96.67, 81.67, 98.33, 100, 95, 93.33, 91.67, 88.33, 98.33,
93.33, 98.33,
93.33, 85, 88.33, 100, 98.33, 96.67, 90, 86.67, 100, 96.67, 98.33,
90, 96.67,
86.67, 95, 78.33, 86.67, 100, 81.67, 96.67, 91.67, 96.67, 96.67,
95, 96.67, 73.33,
100, 93.33, 96.67, 88.33, 70, 96.67, 96.67, 100, 88.33, 96.67, 100,
88.33, 100,
78.33, 93.33,...
Question 10 - of 17 Step 6 of 6 00:43:59 The table below gives the number of hours spent unsupervised each day as well as the overall grade averages for seven randomly selected middle school students. Using this data, consider the equation of the regression line, ġ = bo +bix for predicting the overall grade average for a middle school student based on the number of hours spent unsupervised each day. Keep in mind, the correlation coefficient may or may...
Boats (tens of
thousands) Manatees
66 55
65 38
69 34
67 49
74 42
75 59
78 53
84 69
81 82
87 79
90 81
94 93
92 74
98 67
99 78
102 91
100 73
98 91
97 97
93 82
88 89
87 80
90 71
92 68
idrresponding numbe o ms for 880.000 registered Use the accompanying paired data consisting of registered boats (tens of thousands) and manatee fatalities from boat encounters. Let x...
100 96 24 2000 = 100 18 90 88 95 84 1966 1967 1968 1969 1990 1991 1992 1993 1994 1995 196 197 198 1999 2000 2001 2002 2003 2004 2005 2005 Year Source: Statistics Canada's Internet Site, http://estat.statcan.ca/cgi-win/cnsmcgi.exe, CANSIM table 387-000 V28546044, December 16, 2007. a. By approximately how many index points did the CPI change from 1990 to 2003? b. Express this change as a percent to the nearest hundredth. Is this change an increase or decrease in...
The following data represents the number of days absent and the final grade for a sample of college students in a general education course at a large state university. 0 1 2 3 4 5 6 7 8 9 No. of absences Final Grade 89.2 86.4 83.5 81.1 78.2 73.9 64.3 71.8 65.5 66.2 a) Which variable is the explanatory variable? b) Draw a scatter plot and describe your scatter plot (Direction, Strength, Form). c) Compute the correlation coefficient d)...
Most questions answered within 3 hours.
-
Show the rearrangements of the carbon skeleton in the following
carbocations. Note that in some cases...
asked 1 hour ago -
Use a z -Table to find the specified area.
Between the mean and 3.01 deviations from...
asked 1 hour ago -
Consider the following reaction at equilibrium. What will happen
if O2 is added to the reaction?...
asked 2 hours ago -
Based on how much or how little you have noticed in the media,
do you think...
asked 5 hours ago -
I calculate Rosetta Stone’s P/E ratio as 10x prior to a report
about future industry growth....
asked 6 hours ago -
What major physiological changes account for electrodermal
activity (as in during a lie-detector test)?
asked 7 hours ago -
You are going to sell fruits & vegetables at a local
roadside market. List separately and...
asked 7 hours ago -
Hows does water affect the digestion of fats ?
asked 10 hours ago -
A buffer that contains 0.41 M of a base, B and 0.21 M of its
conjugate...
asked 10 hours ago -
Pleaaaaaaaasssssse help me please please it's more important
:((((((((((((((((((((
CASE STUDY
Nissan Company
Nissan Motor Company,...
asked 10 hours ago -
Calculate the concentration of hydronium and hyroxide ions in 1)
2.0 mol/L HNO3 2) 0.5 mol/L...
asked 10 hours ago -
In a loop-the-loop ride a car goes around a vertical, circular
loop at a constant speed....
asked 10 hours ago