The standard normal distribution is referred to as the:
Question 1 options:
distribution
Z distribution
distribution
np distribution
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Question 2 (3 points)
2
Given that Z is a standard normal variable, the value z for which P(Z z) = 0.2580 is
Question
ST 511
Homework 7 Solution
5.11 can be replaced by s. We will use normal distribution.
> 9.02 + c(-1, 1)*qnorm(0.95)*1.12/sqrt(40)
[1] 8.728717 9.311283
5.18 Since we have to use s to estimate , we will use t distribution.
(a) Since p < , we reject the nu
I
ST511 SAMPLE FINAL EXAM Name: _
12/09/2014 [Total Time: 2 hrs] Total p0ints=112; Max Score: 100
1. At a certain university, 40% of juniors and 30% of seniors have a GPA of 3.5 or more. Further, of
the students in their junior-senior classes, 45% are jun
ST511 MIDTERM EXAM I Name: 0 LU ON
10/06/2014
[Total Time: 110 min] Max Points: 100
1. Suppose that A, B, C be three independent events with P(A) = .1, P( B) = .2, and 13(0) = .3.
(a) Find P([A U B] cfw_1 C). (10pts)
4 a) P:
uia 5,1316. iwiqnwlwk 7) (FY-Q
Name Date I Block
UConn Statistics
Final Review
1.) if a peanut M&M is chosen at random, the chances of it being of a particular color are shown in the
following table:
COLOR
PROBABILITY
The probability of randomly drawing a blue peanut M&M is:
a.) 0.1
b.
APPENDIX H.
Regression Analysis
In Section III and Appendix F, the study team noted that there were statistically significant disparities
for some minority groups (and non-Hispanic, white women) in rates of business ownership, earnings
of business owners,
A
1
2
3
4
5
Beating the market
6
Probability of doing at least this
well by chance
7
8
9
Weeks beating market index
Total number of weeks
Number of mutual funds
Probability of at least one doing
at least this well
B
C
D
E
F
G
37
52
0.00159
=1-BINOM.DIST(B
A
1
2
3
4
5
6
7
8
B
C
Airline overbooking
Number of seats
Probability of no-show
200
0.1
Number of tickets issued
215
D
E
Range names used:
NTickets
=$B$6
PNoShow
=$B$4
Required probabilities
More than 205 More than 200
show up
show up
0.001
0.050
9
10
At
Lane
HW 6
Engr. 323
Problem 3-79
Page 1 of 5
Poisson Distribution
* An rv is said to have a Poisson distribution if the pmf of X is
p(x; ) = e-x , x = 0,1,2,
for some >0
x!
0
otherwise
E(X) = V(X) =
s.d. x =
(pg. 128)
Let us review the criteria and basic
ST 511
Homework 8 Solution
8.6
(a) There seems to be a difference, possibly between device A and D.
(b) We reject the null hypothesis and conclude that there is difference among the means.
> wide <- read.table(header = T, text = '
device sample1 sample2 s
ST 511
Homework 3 Solution
4.10 HHH, HHT, HT H, HT T, T HH, T HT, T T H, T T T
4.13
a. 1/6
b. 1/2
c. 1/2
d. 2/3
4.17
a. 0.15
b. 0.25
c. 0.75
d. 0
4.20
a. Independent: none. In all pairs, knowing one event gives information about the other event.
b. Mutual
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STATISTICS 174: APPLIED STATISTICS
FINAL EXAM
DECEMBER 10, 2002
Time allowed: 3 HOURS.
This is an open book exam: all course notes and the text are allowed, and you are expected to
use your own calculator. Answers should preferably be written in a blue bo
STATISTICS 174: APPLIED STATISTICS
FINAL EXAM
DECEMBER 8, 2001
Time allowed: 3 HOURS.
This is an open book exam: all course notes and the text are allowed, and
you are expected to use your own calculator. Answers should preferably be
written in a blue boo
STATISTICS 174: APPLIED STATISTICS
MIDTERM EXAM
OCTOBER 12, 2004
Time allowed: 75 minutes.
This is an open book exam: all course notes and the text are allowed, and
you are expected to use your own calculator. Answers should preferably be
written in a blu
STATISTICS 174: APPLIED STATISTICS
MAKEUP MIDTERM EXAM
HANDED OUT: NOVEMBER 4, 2004
RETURN ON: NOVEMBER 9, 2004
This is an optional, take-home exam. You are welcome to look over it before
deciding whether to do it. However, if you choose to do so, you mus
STATISTICS 174: APPLIED STATISTICS
TAKE-HOME FINAL EXAM
POSTED ON WEBPAGE: 6:00 pm, DECEMBER 6, 2004
HAND IN BY: 6:00 pm, DECEMBER 7, 2004
This is a take-home exam. You are expected to work on it by yourself and to
hand it in to my oce (Smith 201) no late
ST 511
Homework 1 Solution
2.9 Time magazine.
a. Average Class of 1924 Yalemans salary
b. Unlikely to produce a representative sample.
c. 1) Converage bias (unrepresentative sampling frame): administration might keep more records
of those who are better o
STATISTICS 174: APPLIED STATISTICS
FINAL EXAM
DECEMBER 12, 2003
Time allowed: 3 hours.
This is an open book exam: all course notes and the text are allowed, and you are expected to
use your own calculator. Answers should preferably be written in a blue bo