Question
The amount spent on groceries per week (y) and the number of household members (x) are...
The amount spent on groceries per week (y) and the number of household members (x) are shown below.
The amount spent on groceries per week (y) and the number of household members (x) are shown below.
| x | 2 | 3 | 3 | 4 | 1 | 5 |
| y | 383 | 420 | 466 | 547 | 206 | 622 |
A) Calculate the correlation coefficient r. -> 0.9783
B) Calculate the equation of the regression line. (Round your numerical values to two decimal places.)
Homework Answers
Answer #1
Not the answer you're looking for?
Similar Questions
The amount spent on groceries per week (y) and the number of household members (x) are...
The amount spent on groceries per week (y) and the number of
household members (x) are shown below.
x
2
3
3
4
1
5
y
383
420
466
547
206
622
Calculate the correlation coefficient r.
The amount spent on groceries per week (y) and the number of household members (x) are...
The amount spent on groceries per week (y) and the
number of household members (x) are shown below.
x
2
3
3
4
1
5
y
$383
$420
$466
$547
$206
$620
Determine which variable is the independent variable and which
is the dependent variable.
The independent variable is x and the
dependent variable is y .
Calculate the correlation coefficient r. (Round your
answer to four decimal places.)
r =
Calculate the equation of the regression line. (Round your
numerical values...
Age (X): 24,23,23,25,27,21,21,30,21,29 Number of Hours on Spent on Computer Per Week (Y): 14,24,18,23,19,23,16,10,6,15 Run your...
Age (X): 24,23,23,25,27,21,21,30,21,29
Number of Hours on Spent
on Computer Per Week (Y): 14,24,18,23,19,23,16,10,6,15
Run your correlation analysis. Your cells should include your
deviations, squared deviations (including, SSx and SSy), products
(including SP), computed r coefficient, computed t-value, degrees
of freedom, and critical t-value.
Grading Rubric:
1 point: Deviations accurate
2 point: Squared deviations accurate
1 point: Products accurate
1 point: r coefficient accurate
0.5 point: computed t-value accurate
0.5 point: critical t-value accurate
Suppose that the amount of money spent per week on groceries is normally distributed with an...
Suppose that the amount of money spent per week on groceries is
normally distributed with an unknown mean and standard deviation. A
random sample of 20 grocery bills is taken and gives a sample mean
of $79 and a sample standard deviation of $13.
Use a calculator to find a 95% confidence interval estimate for
the population mean using the Student's t-distribution.
Round your answer to two decimal places
Each month, the owner of a restaurant records y=monthly sales receipts and x=amount spent that month...
Each month, the owner of a restaurant records y=monthly sales
receipts and x=amount spent that month on advertising, both in
thousands of dollars. For the first four months of operation, the
observations are as shown in the table.
Advertising Sales
0 4
1 7
3 9
5 11
a.Find the mean and standard deviation for each variable.
b.Find the values for a and b in the regression line.
c. Find the correlation coefficient. Interpret the relationship
between two variables using...
The table below shows the average amounts spent per week by men and women In each...
The table below shows the average amounts spent per week by men
and women In each of four spending categories:
A
B
C
D
Men
$54
$27
$105
$22
Women
$21
$85
$100
$75
What method provides the best descriptive graph?
1.
Pie chart
2.
Bar chart
3.
Side by side bar charts
4.
Two pie charts
The first step in the solution of a simple regression problem is
to :
a.
Calculate the mean of the independent variable, the...
Is there a relationship between the dollars spent each week on recreation and the number of...
Is there a relationship between the dollars spent each week on
recreation and the number of members of the family? Do larger
families spend more on recreation? Ten Chicago families shared the
following information:
Family
Size
3
6
5
6
6
3
4
4
5 3
Amount
Spent
99
104 151
129 142
111
74
91
119 91
a. What is the dependent variable (Y) in this situation?
b. What is the independent variable (X) in this situation?
c. Calculate...
What is the relationship between the amount of time statistics students study per week and their...
What is the relationship between the amount of time statistics
students study per week and their final exam scores? The results of
the survey are shown below.
Time
9
3
13
5
15
8
5
16
Score
80
75
91
75
93
78
82
91
Find the correlation coefficient:
r=r= Round to 2 decimal places.
The null and alternative hypotheses for correlation are:
H0:H0: ? μ r ρ == 0
H1:H1: ? r ρ μ ≠≠ 0
The p-value is: (Round to four...
Test the correlation between age and amount of time spent per day in hours listening to...
Test the correlation between age and amount of time spent per
day in hours listening to music. Use α = 0.05.
X(Age)
Y (Hours per day )
40
1
15
5
18
5
22
3
30
2
State the claim:
H 0 ρ = 0 C l a i m
H 1 ρ ≠ 0
Critical Values =+/- use table I
Compute Correlation Coefficient: r = (round to 3
place values)
Make a decision to Reject or...
*This question has several parts* Seven participants were asked about the average number of hours they...
*This question has several parts*
Seven participants were asked about the average number of hours
they spent watching TV per week and the average number of hours of
sleep they had per week. Responses from the 7 participants are
presented in the table below.
Participant
Average number of hours watching TV per
week (X)
Average number of hours of sleep per
week (Y)
A
12
38
B
30
45
C
23
42
D
5
64
E
10
43
F
14...
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 27 minutes ago
asked 42 minutes ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 1 hour ago
asked 2 hours ago
asked 2 hours ago
asked 3 hours ago