Use your knowledge of Vitamin absorption to select the term that best ts each statement.
In understanding how much of a vitamin a person is getting, its important to understand not only the amount of
1. A closer look - Comparing and contrasting water soluble and fat soluble vitamins.
The next few questions will help you get a better understanding of the important distinction between fat soluble an
The next few questions will help you dive deeper into vitamin B12 to understand what it does for the human body and what happens when the body
has a vitamin B12 deficiency.
Because vitamin B12 and fol
Folate \l is a hydrophilic or water soluble vitamin that is highly recommended for women to take during the childbearing years, especially if
they are actively trying to conceive or couple potential c
Due on Mara at 11 PM CST
While it is highly recommended that women trying to conceive take enough of this vitamin,
fortification across the board of many food products is hotly debated because it can
STAT 220 Lecture Slides
Testing for Independence in Two-Way Tables
Yibi Huang
Department of Statistics
University of Chicago
Outline
This slide covers Section 6.4 in the text.
Testing for independenc
STAT 22000 Lecture Slides
Continuous Distributions and
Normal Distributions
Yibi Huang
Department of Statistics
University of Chicago
Outline
Coverage: Section 2.5 and 3.1 in the text.
Continuous dis
STAT 22000 Lecture Slides
Data Collection
Yibi Huang
Department of Statistics
University of Chicago
Outline
The slides covers mostly Section 1.1, 1.3, 1.4, 1.5 in the text.
Experiments (1.1, 1.3.4-1.
1. a) The population of interest for this study is all people. The
sample in this study is students from The University of California
Berkeley.
b) The findings cannot be generalized to the population
1. a) The point estimate of the sample mean is 3.22, which is the mean
of the sample. Since the sample is based on a rather large number, it
is safe to use this number as an estimate.
b) SE=
1.99
678
1. a) The sample mean is 3, and the standard deviation is 7.32
b)
t=
HO :
=0
HA :
0
30
7.32 / 29 =2.21
df=n-1=29-1=28
p value=between .05 and .02
At a significance level of .01, we reject the null h
1. a) FALSE: If you put the bars together, those that identify
themselves as democrats appear to compose about a third of all those
surveyed.
b) TRUE: Those that identified themselves as democrats alm
1.8 c) sex=categorical
Age=numerical, discrete
Marital=categorical
Gross income= numerical, continuous
Smoke= categorical
Amt weekends= numerical, discrete
Amt weekdays= numerical discrete
1.44 a) dec
1. P(identical|female)= .15/(.15+.175)= .46 is the probability a set
of twins will be identical given that they are female.
2. a)
i
Number card
Face card
Ace
Ace of clubs
xi
-2
1
3
24
36/52=.69
12/52=
Homework 2 Solution
1. Consider i.i.d. observations X1 , ., Xn Bernoulli(p).
(a) Find the MLE p.
L(p) =
n
Y
pxi (1 p)1xi
i=1
l(p) =
n
X
xi log p +
n
X
i=1
0
l (p) =
i=1
n
1X
p i=1
Pn
p =
1 xi log(1 p)
Homework 3
(due on Thursday, Feb 1, 2018) When solving the problems below as well as future
homework problems, please give detailed derivations and arguments in order to receive
credit. In your soluti
Stat 245: Statistical Theory and Methods II
Instructor: Chao Gao
Winter 2018
Lectures TR 9:3010:50 am, MS 112
Textbook
Mathematical statistics and data analysis (3rd ed.), by John A. Rice
Pre-requisit
Homework 3
(due on Thursday, Feb 1, 2018) When solving the problems below as well as future
homework problems, please give detailed derivations and arguments in order to receive
credit. In your soluti
Homework 2
(due on Thursday, Jan 25, 2018) When solving the problems below as well as future
homework problems, please give detailed derivations and arguments in order to receive
credit. In your solut
Homework 4
(due on Thursday, Feb 8, 2018)
1. You conducted a nice experiment on the effectiveness of a new treatment. The
null hypothesis is that the treatment is not effective and the alternative is
STAT 23400: Winter 2017
Homework #2 (Solutions)
c 2017 Linda Collins.
For your personal use only. Do not distribute or share!
Sharing this document in print, email, or online (or any other medium), in
STAT 23400: Win 2017
HW#9 (Solutions)
c 2017 Linda Collins.
For your personal use only. Do not distribute or share!
Sharing this document in print, email, or online (or any other medium), in whole or
STAT 23400: Winter 2017
HW#8 (Solutions)
c 2017 Linda Collins.
For your personal use only. Do not distribute or share!
Sharing this document in print, email, or online (or any other medium), in whole
STAT 23400: Winter 2017
Homework #6 (Solutions)
c 2017 Linda Collins.
For your personal use only. Do not distribute or share!
Sharing this document in print, email, or online (or any other medium), in
STAT 23400: Winter 2018
Midterm Practice
1. Use 68-95-99.7 rule only, show that the first quartile Q1 of standard normal density is between
-1 and 0.
HINT: Draw a normal sketch to support your answer.