Megha Majumder  STATS 131A!
2/2 HW!
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#3 page 94!
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From the mid1960s to the early 1990s, there was a slow but steady decline in SAT scores. For
example, take the Verbal SAT. The average in 1967 was
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Solution for exercise 5.4.2 in Pitman
Question a) meldm' iln joint distribution on tho unit iqlmrv The Men of
Lhc ininngl [+1] > 1.1 < Ly < i is g, th
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Solution for exercise 5.3.12 in Pitman
Question 21) Let the coordinates ahati be denoted by (X., Yr). The difference between
two shots (X2 7 XhYz 7 Y1) is t
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# Stat133: HW 1
# Description: Basics of character vectors
# Data: Teams that played the superbowl
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# Nam
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# Stat133: HW 2
# Description: Basic manipulation of data structures
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# Data: Camping Tents
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title: "Stat 133 HW03: Flow Control Structures and Functions with R"
author: "Your name and SID"
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# Introduction
This assignment has two purposes:
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title: "Stat 133 HW04: String Manipulation and Regex"
author: "Your name and SID"
output: pdf_document

# Introduction
This assignment has two purposes:
a) to familiarize you with manipulating char
#4a p. 132!
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4a) Using the same data as in exercise 3, say whether each of the following students was on
the SD line:!
(a) height 75 inches, weight 180 pounds  YES (exactly 2 standard deviations abo
Megha Majumder!
Stats 131A!
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#6 p106!
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Among entering students at a certain college, the men averaged 650 on the Math SAT,
and their SD was 125. The women averaged 600 but had the same SD of 125. Th
Name: _Megha Majumder_
Section/GSI: _Erin, Sec 105_
ESPM C167 / PH C160: Environmental Health and Development  Spring 2016
Library Resource Assignment Due Thursday February 4th in class
This assignme
Stats 131AL !
Megha Majumder!
!
#4 exercise set A page 143!
4. As in exercise 2, but you double each value of x!
x!
y!
2!
2!
4!
3!
6!
1!
8!
5!
10!
6!
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r = 0.76!
If you doubled the x values, then the
Name: _Megha Majumder_
!
!
Section/GSI: _Erin, Sec 105_
ESPM C167 / PH C160: Environmental Health and Development  Spring 2016
Library Resource Assignment Due Thursday February 4th in class
!
This as
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Solution for exercise 4.5.7 in Pitman
Question :1) The exercise is closely related to exercise 4.4.9 page 310, as it is the
inverse problem in a special case
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Solution for exercise 5.1.6 in Pitman
Question a) Dilli A, und A? ID the n uni Limos u[ Junk and Jill new.
tiuly, Thu prubnbilily in quu.tiun is
P(A2>Ai+2):%(
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Solution for exercise 5 .2 . 1 1 in Pitman
Question 21)
E(X + Y) = E(X) + E(Y)=1,5
from the general rule of the expectation of a sum.
Question b)
E(XY) = E(
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Solution for exercise 4.4.2 in Pitman
The cfw_Mull IS ninvin think of the IiwLur A m n clumgv or Stll
HILiiallel in [mine Hillier leii aL'cuIitls. length
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Solution for exercise 4.5.4 in Pitman
The operations considered are shifting (addition of b) and scaling (multiplication by
a). We introduce y : nx + bl The
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Solution for exercise 4.2.9 in Pitman
Question a)
mm = [are1dr : [menInpfc Tr"'(rr")tl:r z / rz"r"<lr = rl(r)
n 1.
Question 1) Fur r = 1 we Ilium
I'U
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Solution for review exercise 1 (chapter 1) in Pit
man
Solution for exercise 4.6.4 in Pitman
Questions)
P(Z:l):P(S<T):P(SST):P(TSS):P(Z:1):'P(Z:1):P(Z:ll)