stats
A company with a large fleet of cars found that the emissions systems of 18 out of the 65 randomly selected cars they tested failed to meet pollution control guidelines. Is this strong evidence that more than 20% of the fleet might be out of compliance? Test the appropriate ... Wednesday, May 11, 2011 at 2:18am by Erica

Applied Statistics
Assignment Guidelines Perform a two-tailed hypothesis test using the steps outlined in the assignment description. In a Word document, create a report that includest the following: Null and alternate statements. Pasted Microsoft Excel data output. Identification of the ... Sunday, October 23, 2011 at 6:05pm by Truth

Statistics
Null hypothesis: Ho: p = .80 -->meaning: population proportion is equal to .80 Alternate hypothesis: Ha: p does not equal .80 -->meaning: population proportion does not equal .80 Using a formula for a binomial proportion one-sample z-test with your data included... Friday, June 4, 2010 at 8:36pm by MathGuru

statistic
The amount of time a bank teller spends with each customer has a population mean of 3.10 minutes and standard deviation of 0.40 minute. If a random sample of 16 customers is selected, a) what assumption must be made in order to solve parts (b) and (c)? b) what is the ... Saturday, April 7, 2012 at 12:06pm by Nancy

Statistic
18. Twenty students randomly assigned to an experimental group receive an instructional program; 30 in a control group do not. After 6 months, both groups are tested on their knowledge. The experimental group has a mean of 38 on the test (with an estimated population standard ... Saturday, February 20, 2010 at 1:32pm by Doris I

sociology
Read this article, and think about what sociologists might study on this. It fits with new definitions of marriage and family. Like it or not, we have to understand how to function as a society with this statistic. http://www.cnn.com/2009/LIVING/wayoflife/04/08/out.of.wedlock.... Saturday, August...

...
QoS Techniques: MPLS
CET 2486C – Network Technologies
Professor:
November 27, 2012
Abstract
MPLS or Multi Protocol Label Switching is a networking technology that functions between layers 2 and 3 of the OSI model. MPLS constitutes of adding a label (sometimes called “Shim” because of their placement between layer 3 and layer 2 headers.) to the data package, this label contains special addressing and sometimes prioritization information. Because the MPLS label...

...Elements of a Test of Hypothesis 1. Null Hypothesis (H0 ) - A statement about the values of population parameters which we accept until proven false. 2. Alternative or Research Hypothesis (Ha )- A statement that contradicts the null hypothesis. It represents researcher’s claim about the population parameters. This will be accepted only when data provides suﬃcient evidence to establish its truth. 3. Test...

...Saurabh Sunny Baghmar
MNGT: 6361
Problem Statement: To determine if saving from the total monthly income is gender biased.
Hypothesis: H0: Single Women save equal to single men from their total monthly income. (Null Hypothesis)
H0 = µwomen - µmen = 0
Introduction:
The thought behind this problem statement comes from the report which says that there is a...

...Normal(88.532,5.07943)
Normal(97.1033,5.04488)
Normal(107.15,5.15367)
Summary Statistics
Mean
88.532
Std Dev
5.0794269
Std Err Mean
0.2271589
Upper 95% Mean
88.978306
Lower 95% Mean
88.085694
N
500
Sum
44266
Summary Statistics
Mean
97.103333
Std Dev
5.0448811
Std Err Mean
0.2912663
Upper 95% Mean
97.676525
Lower 95% Mean
96.530142
N
300
Sum
29131
Summary Statistics
Mean...

...Trajico, Maria Liticia D.
BSEd III-A2
REFLECTION
The first thing that puffs in my mind when I heard the word STATISTIC is that it was a very hard subject because it is another branch of mathematics that will make my head or brain bleed of thinking of how I will handle it. I have learned that statistic is a branch of mathematics concerned with the study of information that is expressed in numbers, for example information about the number of times...

...Suppose we’ve done the computation of the Z teststatistic. For each of the following
situations determine the p-value that goes along with Z.
a. Z = 2.12, two-sided test
b. Z = 4.55, two-sided test
c. Z = -1.40, lower-tail test
2. Suppose Z = 1.92.Which has a smaller p-value, the upper-tail test or the two-sided
test? From this, is it more likely...

...TEST REVIEW – We will work these problems in class. Data Files for these
problems will be disclosed in class during the review. On TEST 3, you will be
asked to perform hypothesistests, find confidence intervals, and conduct
regression analyses. Be prepared to also interpret information on any Excel
print-outs. Test 3 will be a multiple-choice test.
1.
A federal agency responsible for enforcing laws...

...middle of a distribution of numbers, such that half the cases are higher and half lower than a value. What statistical measure should he use?
A. mean
B. median*
C. mode
D. standard deviation
3. A "codebook" is
A. only used in existing statistics research.
B. a document that tells the researcher where variables are located in the data file and what numbers go with variable attributes*
C. the set of instructions that tell interviewers or experimenters how to treat...