Stat 528 - Homework 1 Solutions
1.2
The individuals of the set of data are the students: Advani, Barton, etc.
The data contain the values of students, major, points and grade. So the variables are
Major, Points and Grade. Major is categorical. Points is q
Statistics 528: Homework 2 Solutions
1.41 There are several gaps in the data, as can be seen from the histogram.
Minitab Result:
Min
2508
Q1
13278
Med
17022
Q3
23568
Max
26241
Q1
13385
Med
17022.5
Q3
23552
Max
26241
Manual Result:
Min
2508
We cannot find
Statistics 528 Homework 7 Solutions
5.2
(a) No, not a fixed number of trials.
(b) Yes, we choose a sample of fixed size and since 100 persons are chosen at random,
each person in the sample has the same probability of opposing the death penalty ran on
sen
Statistics 528 Homework 6 Solutions
4.10
(a) The sample space would be cfw_female, male.
(b) The sample space would be cfw_6, 7, , 20.
(c) The sample space would be the interval [2.5, 6]/min.
(d) For living human beings, heart rate is probably in the rang
Statistics 528 Homework 5 Solutions
Corrected Version
3.8
(a) In the study, no deliberate assignment of the anesthetics to the patients was done
in order to see the effect of the anesthetics on death rates.
(b) Type of surgery, patient allergy to certain
Statistics 528 Homework 4 Solutions
2.40
(a)
Absorbance
200
100
0
0
1000
2000
Nitrates
Minitab gives the correlation 1.0 (in fact, .99994). Note that it is rounded up.
So, recalibration would not be necessary.
(b) The equation of the least squares line is
Statistics 528 - HW3 Solutions
2.1
(a) Grade would be response and time of study would be explanatory.
(b) Relationship.
(c) Rain would be explanatory and yield would be response.
(d) Relationship.
(e) Income would be explanatory and education would be re
Statistics 528: Homework 2 Solutions
1.41 There are several gaps in the data, as can be seen from the histogram.
Minitab Result:
Min
2508
Q1
13278
Med
17022
Q3
23568
Max
26241
Q1
13385
Med
17022.5
Q3
23552
Max
26241
Manual Result:
Min
2508
We cannot find
Stat 528 - Homework 1 Solutions
1.2
The individuals of the set of data are the students: Advani, Barton, etc.
The data contain the values of students, major, points and grade. So the variables are
Major, Points and Grade. Major is categorical. Points is q