32/3?
Quiz #1
Student Name: I U A
Student Number:
A survey of families in a particular neighbourhood showed the number of children in each
household:
0 3 4 7 1 2 2
o 1 2 .1 3 H 7
Find the
a. mean _
__. L/
X: O~+l+Q+2+3+ 1-7
. 7
3 #59 w, 27/.
STAT 502
MIDTERM REVIEW
QUESTIONS (SOLUTIONS)
1. For the following sample
3.6
5.9
4.0
7.1
8.2
7.1
7.1
8.0
a. Find the mean, median, and mode.
Solution: The sample mean is equal to
x 3.6 5.9 8.0 / 8 6.375 6.4 .
To find the median, we first arrange the days
STAT 502 FINAL EXAM REVIEW QUESTIONS
SOLUTIONS
1.
In a study relating the amounts of time required for room-service delivery at a newly opened
Humber Radisson Hotel, 20 deliveries had a mean time of 24.2 min and a standard deviation of 8.7
min. The sample
STAT 2112
Assignment#2
Fall 2015
STAT 2112
Prof.: Tan Le
Student Name: Farihah Chowdhury
Student ID: 823-130-687
ASSIGNMENT #2
1.
a.
Let X1 be the amount of Ore 1 to be used.
Let X2 be the amount of Ore 2 to be used.
Let X3 be the amount of Ore 3 to be us
Problem 1.
Suppose the following data represents total revenues (in $ millions) for a Canadian company.
Year
Revenue
3-Year Moving
Average
Weighted Moving
Average
Exponentially Smoothed
Value with 0.25
2007
4.7
4.70
2008
4.9
4.70
2009
5.4
4.75
2010
5.1
20
Problem 1.
It is known that 35% of Humber students take Statistics. If a student took and passed Statistics course,
there is 94% chance of finding a job within 6 months. If a student did not take any Statistics course, the
chance is 72%. If a randomly sel
Problem 1: A meat-processing company in Alberta produces and markets a package of eight
small sausage sandwiches. The product is nationally distributed, and the company is interested in
knowing the average retail price charged for this item in stores acro
(WK/l
/ KC/ STAT 502
Quiz #4
_ 7 c?
Student Name: EMA/WV
Student Number: 9522 511 '7 550
1. The employees of a large international company would like to have a dental plan as part of
their benefits package. The question is: How much does a typica
FORMULAE & TABLES FOR STAT 502 FINAL EXAM
p opulation mean, p opulationstandard deviation
n
x sample mean ; x
x
i
i 1
, where n sample size
n
n
s sample standard deviation; s
x
i 1
i
x
2
n 1
df number of degrees of freedom
Probability: Pevent
T he n