Question
In: Statistics and Probability
Using models, analyze and interpret the data in the following table on smoking habits of students...
Using models, analyze and interpret the data in the following table on smoking habits of students in Arizona high schools (Consider a proper model and conduct proper tests for corresponding parameters and goodness-of-fit).
Student Smokes Student Does Not Smoke
Both parents smoke 400 1380
One parent smokes 416 1823
Neither parent smokes 188 1168
Answer in SAS code would be okay!
Solutions
Expert Solution
Solution-
From given data Chi-sqr test of independence is calculated.
Test Results-
orchestra answered 1 year agoRelated Solutions
The table below describes the smoking habits of a group of asthma sufferers. Use this table...
The table below describes the smoking habits of a group of
asthma sufferers. Use this table to answer questions 7-9.
Nonsmoker
Light Smoker
Heavy Smoker
Total
Men
330
75
65
470
Women
315
83
87
485
Total
645
158
152
955
If one of the subjects is randomly selected, find the
probability that he/she is a light smoker or a woman.
(5)
If 3 of the subjects are randomly selected, find the
probability that they are all...
The table summarizes data on smoking status and perceived risk of smoking and is consistent with...
The table summarizes data on smoking status and perceived risk
of smoking and is consistent with summary quantities obtained in a
Gallup Poll conducted in November 2002. Assume that it is
reasonable to consider these data as representative of the U.S.
adult population.
Perceived Risk
Smoking Status
Very Harmful
Somewhat Harmful
Not Too Harmful
Not at All Harmful
Current Smoker
58
35
5
1
Former Smoker
69
20
3
2
Never Smoked
85
11
2
1
(a) What is the...
The data in the following table show the association between cigar smoking and death from cancer...
The data in the following table show the association between
cigar smoking and death from cancer for 138,033 men. Note: current
cigar smoker means cigar smoker at time of death.
Died From Cancer
Did Not Die from Cancer
Never smoked Cigars
673
124,044
Former Cigar Smoker
95
7,801
Current Cigar Smoker
151
5,269
(A) If an individual is randomly selected from
this study, what is the probability that he died from cancer?
(Round to three decimal places as needed.)
(B)...
Using the data on 4137 college students, the following equation was estimated Using the data on...
Using the data on 4137 college students, the following equation
was estimated
Using the data on 4137 college students, the following equation
was estimated
by OLS
colgpai =β0 +β1hsperci +ui, i=1,2,...,4137
where colgpa is measured on a four-point scale and hsperc is the
percentile in the high school graduating class (defined so that,
for example, hsperc = 5 means the top 5 percent of the class).
Coefficients:
Estimate Std. Error t value Pr(>|t|) (Intercept) 2.9803872
0.0141800 210.2 <2e-16 *** hsperc...
5. a. Analyze the Bread variable in the SandwichAnts dataset using aov() in R and interpret...
5.
a. Analyze the Bread variable in the SandwichAnts dataset using
aov() in R and
interpret your results.
The data may be found here:
install.packages("Lock5Data")
library(Lock5Data)
data(SandwichAnts,package="Lock5Data")
attach(SandwichAnts)
b. State the linear model for this problem. Define all notation and
model terms.
c. Create the design matrix for this problem.
d. Estimate model parameters for this problem using ? =
(?T?)-1?T?
e. Interpret the meaning of the estimates from part d.
f. Rerun this problem using lm()in R. Interpret the...
Using the data in the following? table, and the fact that the correlation of A and...
Using the data in the following? table, and the fact that the
correlation of A and B is 0.02?, calculate the volatility?
(standard deviation) of a portfolio that is 80% invested in stock A
and 20% invested in stock B.
Stock A Stock B
2005
-12
16
2006
13 20
2007
8
7
2008
-1 -1
2009
5 -12
2010
6 15
The standard deviation of the portfolio is?
Using the data in the following table, and the fact that the correlation of A and...
Using the data in the following table, and the fact that the
correlation of A and B is 0.32, calculate the volatility
(standard deviation) of a portfolio that is 80% invested in stock A
and 20% invested in stock B.
Stock A Stock B
2005 -4 28
2006 19 20
2007 3 8
2008 -1 -8
2009 5 -9
2010 13 30
Using the data in the following table, and the fact that the correlation of A and...
Using the data in the following table, and the fact that the
correlation of A and B is 0.39, calculate the volatility
(standard deviation) of a portfolio that is 70% invested in stock A
and 30% invested in stock B.
Realized Returns
Year
Stock A
Stock B
2008
−8%
27%
2009
17%
28%
2010
1%
11%
2011
−3%
−2%
2012
1%
−3%
2013
8%
26%
The standard deviation of the portfolio is _%?
For the following sample, display the data using a frequency distribution table and then using a...
For the following sample, display the data using a frequency
distribution table and then using a histogram . Assume the data is
continuous and measured on a ratio scale.
23 21 18 17 17 15 20 3 4 28
16 15 15 15 27 2 3 15 16 16
a) How would you describe the shape of the distribution?
b) Which is the most appropriate measure of central
tendency?
c) Calculate the most appropriate measure of central
tendency.
1. Using the information in the table below, calculate the Index of Segregation by occupation. Interpret...
1. Using the information in the table below, calculate the Index
of Segregation by occupation. Interpret the index number that you
calculated and provide an explanation of it's meaning.
Occupation
Men
Women
Managerial
11,005
9,387
Professional and Technical
12,063
13,952
Sales
7,601
6,953
Clerical/Administrative
3,751
14,128
Service
6.465
10,066
Production/Craft
13,516
1,283
Operatives
9,302
3,007
Laborers
3,631
1,011
Total
67,334
59,787
**Note: All numbers are in thousands**
2. Carefully explain the two broad potential causes for the
extent of gender...
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