Data Set The regression equation for the data given in Example 2.19, is (roundin
ID: 3209090 • Letter: D
Question
Data Set
The regression equation for the data given in Example 2.19, is (rounding the intercept to three decimal places and the slope to five decimal places):
fat gain = 2.505 - (0.00344 x NEA increase).
Use this equation to predict the fat gain for a person whose NEA increases by 600 calories.
Fill in the blank:
(Give your answer to 1 decimal place)
The estimated fat gain is _______ kg.
Step 1:
Consider the following correlations: -0.9, -0.5, -0.3, 0, 0.3, 0.5, and 0.9.
For each, calculate the fraction of the variation in y that is explained by the least-squares regression of y on x.
Match the correlations with the answers below (enter box number):
Enter the number of the term that corresponds to each choice:
r = -0.9
r = -0.5
r = -0.3
r = -0
r = 0.3
r = 0.5
r = 0.9
(Give your answer as a whole number.)
The value of y for x = 3 is: _______ .
Data Set
1) The mean of the mass variable is (give your answer in units of kg to 2 decimal places): _______ kg.
2) The mean of the rate variable is (give your answer in units of cal/day to 1 decimal place): _______ cal/day.
3) The standard deviation of the mass variable is (give your answer in units of kg to 3 decimal places): _______ kg.
4) The standard deviation of the rate variable is (give your answer to in units of cal/day 1 decimal place): _______ cal/day.
Gender
Affiliation
Male
Female
Democrat
300
600
Republican
500
300
Other
200
100
What proportion of the male voters is registered as a Democrat?
Gender
Affiliation
Male
Female
Democrat
300
600
Republican
500
300
Other
200
100
What proportion of registered Democrats is male?
Gender
Affiliation
Male
Female
Democrat
300
600
Republican
500
300
Other
200
100
What proportion of all voters is male and registered as a Democrat?
Size of Car
Gender
Small
Medium
Large
Total
Female
58
63
17
138
Male
79
61
25
165
Total
137
124
42
303
The data are to be summarized by constructing marginal distributions. In the marginal distribution for car size, the entry for medium cars is ______.
Size of Car
Gender
Small
Medium
Large
Total
Female
58
63
17
138
Male
79
61
25
165
Total
137
124
42
303
In the conditional distribution for preference of car size among male respondents, the entry for large cars is _______.
Here are the row and column totals for a two-way table with two rows and two columns:
Which of the following sets of counts a, b, c and d gives these totals?
Explanation / Answer
Dear student, I am only answering the first question as per Chegg Guidelines.
Tthe correct answer is Set 2 and Set 5 because putting those values in the table gives the corrext row and column totals.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.