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
Statistics 244.3 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
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.
Stats 245.3(01) Make—up Test
Open Br:er — students are ettewed nercs. fer-mute sheets, beetles. eeitnrtnters
Select answer clescst tn the cerrcct answer
Instructer: W. H. Lavcrty November 24, 20H}
1. A researcher was interested in hew pcrfermance en a sta
a in ,smrs 995’.
STATISTICS 245.3 (02)
Term Test 1 - Monday, January 21, 2008
Time: 1 hour
(W. H. Laverty)
an Book Examination: Students are allowed to take into the examination a
calculator, their textbook, and formulae sheets. Each question is worth ap
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
Organizing and describing Data
Techniques for continuous
variables
The Grouped frequency table:
The Histogram
To Construct
A Grouped frequency table
A Histogram
1. Find the maximum and minimum of the
observations.
2. Choose non-overlapping intervals of
Numerical Measures
Numerical Measures
Measures of Central Tendency (Location)
Measures of Non Central Location
Measure of Variability (Dispersion,
Spread)
Measures of Shape
Measures of Central Tendency
(Location)
Mean
Median
Mode
Central Location
0.14
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
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
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
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 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
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
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 - 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 245.3 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 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
Stats 245 Assignment 4 - 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) Asst 10 - Solutions
I. A researcher was interested in measuring the average time, , which heart patients
required to metabolize a drug for controlling heart rate. To determine this quantity
the researcher administered the drug to n = 5 hea
STAT 245.3 (01) Assignment 12
Solutions
1. In a study to investigate the effect of regular physical exercise on the reduction
of high blood pressure in males aged 60-65, the researchers selected at random a
sample of n1 =12 males suffering from high blood
Stats 245.3 Assignment 11- Solutions
1.
In the following study the researcher was interested in determining if taking daily vitamin C
supplements over the winter months reduced the incidence of colds during that period. For this
study a sample of n1 = 400
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
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
University of Saskatchewan
DEPAR TMENT ofMA THEMA TICS & STA TISTICS
STATISTICS 244.3
Time: 50 minutes Term Test #1 October 2007
You must sign and return the complete question paper.
Failure to do so will be interpreted as absence f