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Review Assessment: Final Exam
User
Suet Ching Leung
Submitted
9/10/12 10:39 PM
Name
Final Exam
Stat
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STAT 125 Final
Question: Q2. A realtor wants to compare the average sales-to-appraisal ratios of residential
properties sold in four neighborhoods (W, X, Y, and Z). Four properties are randomly selected
from each neighborhood and the r
Skip navigation links STAT125-HK. BUSINESS STATISTICS (STAT125-HK) >
TOOLS > MY GRADES > VIEW ATTEMPTS > REVIEW ASSESSMENT: FINAL
EXAM
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Review Assessment: Final Exam
User
Suet Ching Leung
Submitted
9/10/12 10:39 PM
Name
Final Exam
Stat
UMT
UMT
Home
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STAT 125 Final
Question:
Q2. A realtor wants to compare the average sales-to-appraisal ratios of residential
properties sold in four neighborhoods (W, X, Y, and Z). Four properties are randomly selected
from each neighborhood and the r
PROJECT
Habib Bank Limited
Business Statistics
Submitted to:
Sir Mubbasher Munir
Submitted by:
Umar Ashfaq
15006005-004
Naqash Malik
15006005-002
Program: BBA (H) BATCH-6
DEPARTMENT OF QUANTITATIVE METHODS
UNIVERSITY OF MANAGEMENT AND TECHNOLOGY, SIALKOT
PROJECT
Automobile Industry of Pakistan
Business Statistics
Submitted to:
Sir Mubbasher Munir
Submitted by:
Ahmad M. Nawaz
15006005-005
Usman Haider
15006005-008
Program: BBA (H) Batch-6
DEPARTMENT OF QUANTITATIVE METHODS
UNIVERSITY OF MANAGEMENT AND TECH
Sampling distributions describe the distribution of
parameters.
statistics.
both parameters and statistics.
neither parameters nor statistics.
ANSWER: b
The standard error of the mean
is never larger than the standard deviation of the population.
decrease
Question 41
2 out of 2 points
TABLE 12-13
Parents complain that children read too few storybooks and watch too ch
television nowadays. A survey of 1,000 children reveals the following
information on average time spent watching TV and average time spent re
Question 31
2 out of 2 points
TABLE 11-4
A campus researcher wanted to investigate the factors that affect visitor travel
time in a complex, multilevel building on campus. Specifically, he wanted to
determine whether different building signs (building map
Question 21
2 out of 2 points
The owner of a local nightclub has recently surveyed a random sample of n =
250 customers of the club. She would now like to determine whether or not the
mean age of her customers is over 30. If so, she plans to alter the ent
Question 11
2 out of 2 points
TABLE 10-2
A researcher randomly sampled 30 graduates of an MBA program and recorded
data concerning their starting salaries. Of primary interest to the researcher was
the effect of gender on starting salaries. Analysis of th
Question 1
2 out of 2 points
A survey claims that 9 out of 10 doctors recommend aspirin for their patients
with headaches. To test this claim against the alternative that the actual
proportion of doctors who recommend aspirin is less than 0.90, a random s
Sampling distributions describe the distribution of
parameters.
statistics.
both parameters and statistics.
neither parameters nor statistics.
ANSWER: b
The standard error of the mean
is never larger than the standard deviation of the population.
decrease
Submitted
9/21/15 10:54 AM
Name
Midterm Exam
Status
Completed
Score
96 out of 100 points
Instructions This examination has 50 equally-weighted questions. Pick the single best answer for each
question. Do not offer more than one answer for any question. If
1.
a)
b)
c)
d)
The width of a confidence interval estimate for a proportion will be
narrower for 99% confidence than for 95% confidence.
wider for a sample size of 100 than for a sample size of 50.
narrower for 90% confidence than for 95% confidence.
narr
True or False: The standard error of the mean is also known as the standard deviation of the sampling distribution of the sample mean.
ANSWER: True
True or False: A sampling distribution is defined as the probability distribution of possible sample sizes
1) The process of using sample statistics to draw conclusions about true population parameters is called
A) statistical inference.
B) the scientific method.
C) sampling.
D) descriptive statistics.
Answer: A
2) Those methods involving the collection, prese
Sampling distributions describe the distribution of
parameters.
statistics.
both parameters and statistics.
neither parameters nor statistics.
ANSWER: b
The standard error of the mean
is never larger than the standard deviation of the population.
decrease
Question 1 Multiple Choice out of 2 points
Why is the Central Limit Theorem so important to the study of sampling distributions?
Given Answer: d. It allows us to disregard the shape of the population when n is large.
Correct Answer: d. It allows us to dis
_ results from the exclusion of certain groups of subjects from a population frame.
ANSWER: Coverage error
Coverage error results in a _.
ANSWER: selection bias
_ results from the failure to collect data on all subjects in the sample.
ANSWER: Nonresponse
STAT100-V2. BASIC STATISTICS (STAT100-V2) > EXAMS > TAKE ASSESSMENT: EXAM 4
Take Assessment: Exam 4
Name
Exam 4
Instructions
Always pick the single best answer.
Multiple Attempts This Test allows 2 attempts. This is attempt number 1.
Force Completion This
STAT100-V2. BASIC STATISTICS (STAT100-V2) > EXAMS > TAKE ASSESSMENT: EXAM 3
Take Assessment: Exam 3
Name
Exam 3
Instructions
Always pick the single best answer.
Multiple Attempts This Test allows 2 attempts. This is attempt number 1.
Force Completion This
STAT100-V2. BASIC STATISTICS (STAT100-V2) > EXAMS > TAKE ASSESSMENT: EXAM 1
Take Assessment: Exam 1
Name
Exam 1
Instructions
Always select the single best answer.
Multiple Attempts This Test allows 2 attempts. This is attempt number 1.
Force Completion Th
Stat 544 Final Exam
May 1, 2007
I have neither given nor received unauthorized assistance on this examination.
signature l. A classic example in the Bates and Watts non-linear regression text concerns the "Rumford cooling
experiment," where after friction
yrs
1. Below are tables giving pmfs f (x I 6) for an observable X , for a parameter 6 with possible
values 1,2, and 3 . Then there is a table giving a pmf g(6) for a simple discrete prior distribution
for the parameter.
ID/é; a) Suppose that a single ob
1. Suppose that a parameter 0 = (61,02) takes one of the values in {(1,0),(2,l],(2,3)}. Then X
4 4
is unifome distributed on {0,1,2} if 61 =1
is Binomial (2,02) if 61 = 2
A Bayesian uses prior probabilities
g<w>=agaza=awgala};
a) In the table below give t
l/véY Qiié' Fina l
1. Below is a directed acyclic graph that represents a joint distribution for the variables
a,pl,p2,p3,Xl,X2, andX3.
(m5)
/l\.
Some information about this joint distribution is that:
a and ,8 are independent, a ~ Exp(l), ~ Exp (1)
condi
All of the Gamma distributions in this homework solution are based on the shape parameter
alpha and inverse scale parameter beta, i.e. X~Gamma(alpha,beta) has pdf
STAT544
Homework 1
2008-02-05
Keys
GCS&R 2.1
Ans:
Suppose that the prior distribution for is