7.1 Basic Properties of Confidence Inten/als 275
In general, the upper and lower condence limits result from replacing each < in
(7.6) by = and solving for 6. In the insulating uid example just considered,
ZAEXl- = 34.170 gives A = 34.170/(221g) as the up
a. These hypotheses comply with our rules.
b. H0 is not an equality claim (e.g. 0' I 20 ). so these hypotheses are not in compliance.
c. HO should contain the equality claim. whereas Ha does here. so these are not legitimate.
d. The asserted value of 311
HW#2 STAT 3025
Due Monday Sep 19th at the beginning of class
Note: 1. No late submission.
2. For people who havent purchased textbook, please make sure that you
have the correct problem from the book.
Chapter 2:
47
49
53
63
78
80
Chapter 3
1
7
HW#1 STAT 3025
Due Wednesday, Sep 3rd at the beginning of class
Note: 1. No late submission.
2. For people who havent purchased textbook, please make sure
that you have the correct problem from the book.
1. A stem and leaf plot is given below:
5|6
6|
7 |
(fl.645%,ooj. From 5a, f=4.85,0=.75,andn=20; 4.851.645£=4.5741,so the
1
m
interval is (4.5741,oo) .
c. (oo,f+za 1) ; From 4a, 2 = 58.3 , a = 3.0, and n = 25; 58.3+2.333 = 59.70 , so the interval is
3/; 725
(00, 59.70).
14. f
a. 89.10: 1.96 = 89.10i.56 :
HW#4 STAT 3025
Due Monday Oct 3rd at the beginning of class
Note: 1. No late submission.
2. For people who havent purchased textbook, please make sure that you
have the correct problem from the book.
Chapter 3:
74
75
81
85
Chapter 4:
1
5
11
14
HW#3 STAT 3025
Due Monday, Sep 26th at the beginning of class
Note: 1. No late submission.
2. For people who havent purchased textbook, please make sure that you
have the correct problem from the book.
Chapter 3:
10
13
23
29
32
50
57
63
CSE 3100 Systems Programming
Assignment #4
Out: 09/28/16
Due: 10/05/16
This assignment requires you to complete the implementation of a hash table with string keys and int values
based on separate chaining. The hash table API is provided in the git reposi
CSE 3100 Systems Programming
Assignment #5
Out: 10/10/16
Due: 10/19/16
The purpose of this assignment is to experiment with process management APIs and pipe APIs. The best way to
do this is to build the part of a baby shell responsible for executing comma
CSE 3100 Systems Programming
Assignment #3
Out: 09/21/16
Due: 09/28/16
Exercise 1. Matrix Transposition (40 points)
Fixed size matrices can be represented in C as two-dimensional arrays, i.e., arrays of arrays. For example we can declare
a 3 3 matrix of d
CSE 3100 Systems Programming
Assignment #1
Out: 09/09/16
Due: 09/14/16
For instructions on how to checkout the template code for the assignment and submit solutions using git, see http:
/dna.engr.uconn.edu/moodle/mod/page/view.php?id=129
Exercise 1. (50 p
CSE 3100 Systems Programming
Assignment #2
Out: 09/15/16
Due: 09/21/16
For instructions on how to checkout the template code for the assignment and submit solutions using git, see http:
/dna.engr.uconn.edu/moodle/mod/page/view.php?id=129
Exercise 1. Polyn
HW#1 STAT 3025
Due Friday, Sep 11th at the beginning of class
Note: 1. No late submission.
2. For people who havent purchased textbook, please make sure that you have the correct
problem from the book.
Chapter 1
1. A stem and leaf plot is given below:
5|6
HW#1 STAT 3025
Due Friday, Jan 27th at the beginning of class
Note: 1. For people who havent purchased textbook, please make sure that you have the correct
problem from the book.
2. Late submission can receive at most 50% of the credits. Homework submitte
STAT 3025 Practice Examples
1. True or False:
For each statement below, use T if you think it is true; F if you think it is false. You
do not need to justify your answer nor need to show work for this part.
1.
In a classroom, there are 5 student choose th
Tests of Hypotheses Based on a Single Sample
Hypotheses and Tests
Example
1. (Fairness of Coin) A person wanted to check if a coin was fair. He tossed the coin
20 times and got 13 heads. Is this evidence that the coin is not fair?
2. (Production Procedure
Inferences Based on Two Samples
1
Two-Sample z Test and CI
Example (Steel) A study was conducted to compare the mean yield-strength of coldrolled steel and that of two-sided galvanized steel, denoted 1 and 2 , respectively. A
random sample of m = 20 speci
Statistical Intervals Based on a Single Sample
1
Condence Intervals
A point estimate of a parameter is a single number, which is unlikely to be the true value
of the parameter. In many cases, it is more useful to get an interval of plausible values of
the
Continuous Random Variables and Probability Distributions
Probability Density Functions
A random variable X is said to be continuous if both of the following apply:
1. Its set of possible values consists either of all numbers in a single interval on the n
Point Estimation
1
Estimation
Statistical inference aims to draw some conclusion about one or more population characteristics. In Statistics, we refer to a population characteristic as a parameter. A parameter
of interest typically is denoted by . When th
Discrete Random Variables and Probability Distributions
What are Random Variables
In any experiments, there are numerous characteristics that can be observed or measured,
but in most cases an experimenter will focus on some specic aspect or aspects of a s
Practice Exam (chapter 4)
(1-4 are from our quiz 4-5)
1. Suppose Y follows a uniform distribution on [0, 1], write out and draw its pdf (probability density
functions). What is the median (50th percentile) of this distribution?
2. Suppose the probability
1.
Let X denote the proportion of allotted time that a randomly selected student spends working
on a certain aptitude test. Suppose the pdf of X is
( 1) x 0 x 1
0 otherwise
where -1 < . A random sample of 6 students yields data x1 = .92, x2 = .79, x3 =