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
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
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
(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