Homework #11
4.4.2 Normal Probability Plot
Normal Probability plot (a) goes with histogram I, since that histogram is skewed to the right and
plot a shower larger y-values that we would expect if we h
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Name: STP 231 D. Richardson
Class: SLN: 84145 9:40-10:30 SLN: 75805 10:45-11:35
SLN: 84149 12:55-1345 SLN: 74369 2:00-2:50
Cha ter 3 More Probabili Problems uiz 2
The following problems are du
Assignment 5
2.6.3
(a) Any sample where the deviations yi y are equal to -3, -1, 0, 2, and 2 would be
correct
(b).The standard deviation would be s = 3
(c) They will get the same answer as the deviati
Homework 7 Solution
Assignment 7
3.2.1 a. Since in the population 51% of the fish have vertebrae, then Pr(Y=21)=0.51
b. In the population the percentage of fish with 22 or fewer vertebrae is 3+51+40=9
Assignment 17
7.2.2 a.
ts
ts
y1 y 2
s12 s 22
n1 n2
y1 y 2
where SE y1 y2
SE y1 y2
s12 s 22
n1 n2
100.2 106.8
5.7
t s 1.16
since t 0.1 1.372 and t 0.2 0.879, the 0.20 p - value 0.40
b.
y y2
ts 1
Assignment 20
9.2.4
y 2
28 2
~
p
0 . 051
n 4
580 4
SE
~
p
~
p 1 ~
p
n 4
0 . 51 1 0 . 51
580 4
0 . 009
Assumptions
1. Simple random sample
2. The number of successes, y=28, and the number of failure
Assignment 15
6.7.2 SE(Y Y
1
2)
9.192 Dark is denoted as Sample 1 and Photoperiod is denoted as Sample 2.
a. For a 95% Confidence Interval
92 115 2.4479.192
43.5,0.5 or 43.5 1 2 0.5 nmol/gm
b. For a
Homework 6 Solution
Assignment 6
2.S.5 The median Q2=0.114, Q1=0.107, Q3=0.120. The interquartile range IQR=Q3 Q1=0.120-0.107=0.013
b) To be an outlier on the upper end of the distribution, an observa
Assignment 21
10.2.7
Condition
Seizure-free
Not Seizure-free
Total
Valproate
6
(6.49)
14
(13.51)
20
Phenytoin
6
(5.51)
11
(11.49)
17
Total
12
25
37
Assumptions
1. All expected frequencies are 1 or gre
SYLLABUS
STP 226 Elements of Statistics
Spring 2017 Class 13133 1/10/17 to 4/27/17
Instructor:
Wendell F. Paulson
Faculty Associate Statistics, School of Mathematical and Natural Sciences
Office Hours
STP 226 GROUP PROBLEMS Chapters 11.1, 10
1. Problem 11.22 p. 524
At the 5% significance level, do the data suggest that the standard
deviation of highway mileages for all cars of this model is differe
STP226 Group Problems CH. 8
1. Problem on Page 348
Determine a 95% confidence interval for the mean calcium intake, , of all adults with incomes
below the poverty level. The population standard deviat
STP 226 GROUP PROBLEMS Chapter 9
1. Problem 9.20 Page 375
Determine the null and alternative hypothesis. Classify the test as two tailed, left
tail, or right tailed.
2. Problem 9.86 page 397
List the
STP226 Group Problems Ch. 5, 6, 7
1. A poll found that 72% of American voters are in favor of a carbon tax. Suppose
that six voters in the United States are randomly sampled and asked whether
they fav
STP226, Review notes for Test #2. (chapters 7-9)
1. Know new vocabulary and symbolic notation :
normally distributed variable ( X ~ N(,) )
normal and standard normal distribution curves (Z ~ N( 0, 1)
STP226 Elementary Statistics
Professor Jackiewicz
Study Guide Exam 1
Types of Statistics:
Descriptive Studies
Inferential Studies
Describing sample
Making an inference of full population based on
samp
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Type in the formulae in their applicable rows along Column K; then use
equals signs (=) to transfer the values to the remaining columnar cells.
Format each column'
Assignment 1 Homework Solution
1.2.1 It appears that the problems with the peoples digestive system were psychosomatic. They
expected to have health problems when their water was fluoridated so when t
12.2 The Correlation Coefficient
In this section, we will be studying the linear correlation
coefficient which is the measure of how closely the two
variables are related or are not related
Linear Cor
12.3 The Fitted Regression Line
In this section, we will come up with an equation for the fitted
line. In linear regression, all of the ordered pairs are used to
determine the equation for the line.
T
12.1 Linear Equations with One Independent Variable
In this chapter we will be studying the relationship between
two quantitative variables.
Historically in algebra classes when a line is created from
Assignment 3
Section 2.2
2.2.4
Number of Dendritic Branch segments Emanating from a Nerve Cell of a Newborn Guinea Pig
rigidus Acropithecus rigidus
20
30
40
50
60
Number of Branches
Stem and Leaf Plot
Assignment 4
2.4.1
(a) The median is 15, Q1 14, Q 3 20
(b) IQR Q 3 Q1 20 14 6
(c) If an observation is greater than the value for the Upper Limit then it is considered an outlier. From
this data
UL Q
Homework 5 Solution
2.7.5 Both a log transformation and a square root transformation will pull in the right-hand tail and push out the
left-hand tail, but a log transformation is more severe than is a