Comments The largest contributor to x-square was grades of F. There was an observed count of 16 Fs and an expected count of 7.5 (more observed than expected). The contribution to xsquare was 9.63333. Grades of Ds were also significant contributors with an
BA 332 LAB 13A CORRELATION AND REGRESSION
Name: Nathan Ostrom
Mr. James McWhinney, president of Daniel-James Financial Services, believes there is a relationship
between the number of client contacts and the dollar amount of sales. To document this assert
BA 332 LAB 12A ANOVA
Name: Nathan Ostrom
Refer to the Baseball 2012 data, which report information on the 30 Major League Baseball teams for the 2012 season.
Create a variable that classifies a team's total attendance into three groups: less than 2.0 (mil
BA 332 LAB 10A
Name: Nathan Ostrom
1. A sample of 36 observations is selected from a normal population. The sample mean is 49, and
the population standard deviation is 5. Conduct the following test of hypothesis using the .05
significance level.
Step 1.
S
Two-Sample Tests of Hypothesis
Population Standard Deviations Known
population 1
x bar = 7.6
sigma = 2.3
n=
40
SE = 0.36366
level of significance =
alternative hyp :
z statistic =
p-value =
z critical =
decision :
population 2
x bar = 8.1
sigma = 2.9
n =
One Sample Test of Hypothesis
Population SD Known, Z-test
n=
x bar =
sigma =
se =
36
21
5
0.83
mu =
alpha =
z statistic =
20
0.05
1.20
lef
z critical =
-1.64
p value =
0.8849
decision : Fail to reject the null Hypothesis.
right
z critical =
1.64
p value =
Uniform Distribution
min
max
mu
sigma
0
30
15
8.6602540378
x min
x max
25
30
prob
0.1667
Normal Distribution
x min
x max
mu
sigma
2.50E+03
3000
1994
450
z min
z max
1.12444
2.35555
prob
0.1177
prob
0.1212
Sampling Distribution of the Sample Mean
x bar min
F.DIST.RT
F
df numerator
df denominator
0.0403
4.23
6
7
(Right-tailed probability for a given value of F)
F.INV.RT
probability
df numerator
df denominator
10.46
0.0100
7
5
(Value of F for a given probability)
ven value of F)
Final Reviw
1. The names of the positions in a corporation, such as chief operating officer or controller, are
examples of what type of variable?
Qualitative
Quantitative
Interval
Ratio
The variable, job title, is qualitative.
2. Shoe style is an example
BA 332 CHAPTER 9A LAB
Confidence Interval Simulation
Name: Nathan Ostrom
For this exercise we will simulate 100 samples of size 30 from a normal distribution. For each
sample, we will calculate the sample mean and the standard deviation. We will use these
Valerie Pisano MTThF 10-10:50 Problem 15.24 Significant contributors to chi-square were Democrats that support inflating the economy, Republicans that support inflating the economy, and Democrats that support cutting spending. Democrats that support infla
Voters do not tend to vote Democrat or Republican based on gender or education. There is a relationship between voting and income. Lower income voters ($0-49,000) were more likely to vote Democratic while higher income ($50,000+) voters were more likely t
# Observations: 50 # Variables: 3 Remove high residual observation # Observations: 49 # Variables: 3 Remove variable of age because of multicolinarity with variable years Remove age versus year because of weaker correlation with dependent variable and ins
CHAPTER 2 LAB BA 332
Name: Alexandra Thomann
Refer to the Real Estate data, which reports information on homes sold in the Goodyear, Arizona
area during the last year. Use Excel to organize the selling prices into a frequency distribution.
1. Draw a frequ