STAT 245.3 (01) Term Test #2
27 July 2010
Page 1
UNIVERSITY OF SASKATCHEWAN
[M. Bickis]
Department of Mathematics & Statistics
Statistics 245.3 (02)
Term Test #2
Time: 50 minutes
27 July 2010
Textbooks and course notes may not be used. Calculators are per
Stats 245.3 Assignment 9 - Solutions
1. In area A the selling price of homes has a normal distribution with mean A =130
thousand and a standard deviation of A = 20 thousand, while in area B the selling
price of homes had a normal distribution with mean B
Stats 245 - Asst 3 Solutions
a) Construct the stem and leaf display for Math proficiency for students who had
completed grade 13.
5
3567
6
0119
7
0123344445567
8
05
9
0
b) Construct the stem and leaf display for Math proficiency for students who had
compl
Stats 245 Assignment 2 - Solutions
For each of the three drugs A, B and C
a) Compute the mean and the standard deviation.
Drug A
n
x=
x
i =1
i
n
=
209.2
= 10.46 , s =
20
n
xi
n
2
xi i =1
2
2431.72 (209.2 )
2
n
i =1
n 1
=
20 = 3.58
19
Drug B
n
x=
x
i
Stats 245.3(02) Assignment 4 - Solutions
I. In the following study the investigator was interested in determining if the Presence of Heart
Disease was related to Systolic Blood pressure. The study consisted of four groups of
subjects with differing levels
Statistics 245.3 Review Problems for the Final Exam
Solutions
I
The following data were collected on n = 3023 persons who suffered a head injury in a
motor vehicle accident in Saskatchewan. The variables that were measured for each case
were:
1.
2.
Sex (S
Statistics 245.3 (01) Assignment 5
Solutions
I
In a recent study, n = 2218 college students were asked which political party
(Liberal, Conservative, New Democrat, Other) they support. They were also
asked to identify if the major factor in making this cho
Statistics 245.3(01) Assignment 7 - Solutions
1.
Find all values of k so that the following is a probability distribution:
x
1
2
3
4
P(x)
0.15
2k
0.52
k
ANSWER:
k = 0.11
2.
Find the mean and standard deviation of the following probability distribution:
x
Stats 245 Assignment 6- Solutions
Not to be handed in
1. How many distinct ways can the letters of the word statistics be ordered.
Solution: There are 10 positions for the letters:
1
2
3
4
5
6
7
8
9
10
10 10 9 8
Let n1 = the # ways to chose positions for
Stats 245.3(02) Assigment 8 - Solutions
1.
Waiting times to see a doctor at a large clinic are normally distributed with a mean of 68.2
minutes and a standard deviation of 14.8 minutes. Find the probability that the waiting time to
see a doctor is less th
Serediak, Alexandra
als839
STAT 245
2015-2016 regular session, Term 2
1 a)
What one can conclude about the weight problem in America is that more than half of adults 18 years
old and over are overweight or obese at respective percentages of 35.3 and 26.2.
PHYSICS 115: WRITTEN ASSIGNMENT 10
Due:
22 Nov 2016 at 1830 (Sec 04)
24 Nov 2016 at 0900 (Sec 97)
24 Nov 2016 at 1000 (Sec 02)
25 Nov 2016 at 0930 (Sec C15)
25 Nov 2016 at 1030 (Sec 01)
25 Nov 2016 at 1130 (Sec 03)
For each of the following questions, wor
10000
0
5000
Frequency
15000
Population Distribution when H0: mu = 170 is true
140
160
180
200
220
200
220
X
10000
5000
0
Frequency
15000
Population Distribution when H1: mu = 175 is true
140
160
180
Y
300
200
0
100
1:500
400
500
Distribution of xbar of n
Stats 245 Assignment 14- Solutions
1.
a)
220
210
200
190
180
170
160
150
140
130
120
180
190
200
210
220
230
b)
n
12
x
y
2549.7
2173.6
S xx
S yy
1906.26 4242.01
b
a
RSS
2
s
s
x 2
y 2
543653.8 397953 462959.7
S xy
1123.99
0.58963
55.8516
3579.27
357.927
18
Stat 245.3(01) Assignment 15
Solutions
1. It is claimed that the average July rainfall in Saskatchewan is 9.8 cm.
In the last n = 10 years the amount of rainfall in July was:
7.8 6.4 10.2 11.4 5.4 9.8 6.3 8.1 12.1 14.4
Test so see if the claim is true usi
STAT 245.3 (01) Term Test #2
27 July 2010
Page 1
UNIVERSITY OF SASKATCHEWAN
[M. Bickis]
Department of Mathematics & Statistics
Statistics 245.3 (02)
Term Test #2
Time: 50 minutes
27 July 2010
Textbooks and course notes may not be used. Calculators are per
g in
Stats 245.3 Term Test 5
Open Book Examination
Select answer closest to the correct answer
Monday, March 31, 2008
I. In the following example the researcher was interested in studying factors affecting X,
the waiting time from initial diagnosis of
Stats 245.3(01) Assignment 5 - Solutions
I. In the following study the investigator was interested in determining if the Presence of Heart
Disease was related to Systolic Blood pressure. The study consisted of four groups of
subjects with differing levels
Statistics 245.3 Assignment 13 - Solutions
1. Samples were taken of individuals with each blood type to see if the average white
blood cell count differed among types. Eleven individuals in each group were
sampled. The results are given in the table below