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Review Test Submission: Ch01
10/5/14, 12:31 PM
HSTA
*Chapter Quizzes
120.01/02
(F14)
Statistics
with
Applications
Review Test Submission: Ch01
Review Test Submission: Ch01
User
Kenny Y Huang
Course
STA 120.01/02 (F14) Statistics with Applications
Test
Ch0
Review Test Submission: Ch01
10/3/14, 10:07 PM
HSTA
*Chapter Quizzes
120.01/02
(F14)
Statistics
with
Applications
Review Test Submission: Ch01
Review Test Submission: Ch01
User
Kenny Y Huang
Course
STA 120.01/02 (F14) Statistics with Applications
Test
Ch0
STA 120 Dr. Hoon Kim
Name: Bronco ID (last 4 digits): _ Section No:
By signing this hono pledge, H NI] , I certify that the work on
this exam is entirely my own work.
< INSTRUCTIONS >
1. For multiple—choice questions (Questions 1—14): Choose t
N
STA 120 Dr. Hoon Kim
Name: _i _ Bronco I ( as digits):
By signing this honor pledge,
this exam is entirely my own work.
Section No:
ll , I certify that the work on
< INSTRUCTIONS >
1. For multiple—choice questions (Questions 1—17): Choos
Question 1
0.5 out of 0.5 points
In a sample of 500 items produced by a machine, the quality control staff found 35
items to be defective. The 95% confidence interval for the proportion of defective
items in all items produced by this machine is close to
Question 1
0 out of 0.5 points
A quality control engineer wants to determine what proportion of defective parts are
coming off the assembly line. What sample size does the engineer need in order to
estimate the true proportion within a margin of error (m
1) A survey of college graduates asked , how old were you when you earned your
bachelors degree? The results of 60 respondents revealed a sample mean of 24.1 years
with sample standard deviation 3.2 years.
a) Construct a 90% confidence interval for the po
STA 120 Practice Quiz #4
Mr. Windley
The Culture Fair Intelligence Test (CFIT) is a widely used IQ test used to measure
intelligence. Scores on the CFIT are approximately Normal with a mean of 100 and
standard deviation of 24.
1) Subjects who score below
Practice Quiz 5
1) For a certain type of battery, the mean lifetime of batteries under continuous use is 17 hours with
standard deviation 0.8 hours (the shape of the distribution of battery lifetimes is unknown).
a) What is the probability that a randomly
STA 120 Practice Quiz #4
Mr. Windley
The Culture Fair Intelligence Test (CFIT) is a widely used IQ test used to measure
intelligence. Scores on the CFIT are approximately Normal with a mean of 100 and
standard deviation of 24.
1) Subjects who score below
STA 120 Practice Quiz 1
Here is a set of data which you are to turn into a histogram
1
2
3
4
5
00001223456678
01124578
013469
02359
17
Begin first class at 10
Class width = 8
Use inequality notation for defining classes
1) Create a class-frequency table
2
Practice quiz 3
1) The following are the results of the AP Calculus exam in a large school district. Those taking
the exam either passed or failed.
Pas Fai Total
s
l
Male
45
30 30
Femal 24
26 70
e
Total
40
60 100
a) Find each of the following probabilitie
Here is a set of data.
42, 34, 47, 38, 43, 35, 40, 63, 45, 49, 41, 40, 58, 47, 45, 37
1) What is the 5-number summary for this data?
2) Construct a box-plot for this data.
3) What is the IQR?
4) Identify any outliers or explain why there are none.
5) Calc
Question 1
0.5 out of 0.5 points
Under descriptive statistics, we study:
Selected Answer:
the methods for organizing, displaying, and describing data
Answers:
the description of decision making tricks
the methods for organizing, displaying, and describing
Section 2.3: Set Notation
Sets are collections of mathematical concepts
Things insides sets are elements
A is a subset of B if everything in A is in B. Denoted as A B
The union of two sets, A and B, is the set containing all elements in either A or
B or b
Question 1
0 out of 0.5 points
A particularly common question in the study of wildlife behavior involves
observing contests between residents of a particular area and
intruders. In each contest, the residents either win or lose the
encounter (assuming th
Question 1
0.5 out of 0.5 points
(Warning: Depending on the type of computers you are using, you may not be
able to see the following stem-and-leaf display correctly. If leaves are written
vertically, rearrange them so that they can be seen horizontally.
Question 1
0.5 out of 0.5 points
Two events are independent if the occurrence of one event:
Selected
Answer:
does not affect the probability of the occurrence of
the other event
Answers:
affects the probability of the occurrence of the other
event
does n
Question 1
0.5 out of 0.5 points
A pollster asked 1,000 adults whether Republicans or Democrats have
better domestic economic policies. The following table gives the two-way
classification of their opinions. The pollster then randomly selected one
adult
Question 1
0.5 out of 0.5 points
The annual salaries of six employees of a company are as follows:
$26,000, $35,000, $19,000, $46,000, $56,000, and $72,000. The range for
these data is:
Selected
Answer:
$53,0
00
Answers:
$56,0
00
$39,0
00
$47,0
00
$53,0
Question 1
0.5 out of 0.5 points
Suppose that the population of the scores of all high school seniors that
took the SAT-M (SAT math) test this year follows a normal distribution with
unknown population mean and known standard deviation 100. You read a
re
Question 1
0.5 out of 0.5 points
For a discrete random variable x, the probability of any value of x is:
Selected
Answer:
always in the range from
zero to 1
Answers:
always greater than 1
always less than zero
always in the range from
zero to 1
never gre
Question 1
0.5 out of 0.5 points
The following table gives the frequency distribution of the number of
telephones owned by a sample of 50 households selected from a city. The
number of households who own more than one telephone is:
Number of
Telephones
Ow
Question 1
0.5 out of 0.5 points
Consider the following six pairs of x and y values. The value of
[ Java: sigma y square]
x
8
Selected
11
Answer:
15
3
Answers:
20
22
is:
y
12
2,19
16
0
20
7
1,14
30
3
21
891
1,30
3
2,19
0
Question 2
0.5 out of 0.5 points
Question 1
0.5 out of 0.5 points
The following table gives the frequency distribution of opinions of 50
persons in regard to an issue. The percentage of persons who have no
opinion is:
Opinion
In Favor
Against
12
24
%
Answers:
18
No
Opinion
Selected
Answ
STATISTICS GUIDED NOTEBOOK/FOR USE WITH MARIO TRIOLAS TEXTBOOK ESSENTIALS OF STATISTICS, 4TH ED.
c. Between 1.00 and 3.00
e. Greater than 3.68
d. Between -2.87 and 1.34
USING THE TI-84
CREATED BY SHANNON MARTIN GRACEY
107
STATISTICS GUIDED NOTEBOOK/FOR U
Practice Test 4
1. Listed below are weights (in pounds) of glass discarded in one week by randomly
selected households. These eight values have a standard deviation of s = 2.4569 pounds.
Use the sample data to construct a 95% confidence interval estimate