What hypothesis testing procedure would you use in the following situations?

a) A test classifies applicants as accepted or rejected. On the basis of data on 200 applicants, we test the hypothesis that ad placement success is not related to gender.

H0: ad placement success is not related to gender. (Indep) Ha: ad placement success is related to gender. (Dep)
2-independent sample Chi-square test

b) A company manufacturers and markets automobiles in two different countries. We want to know if the gas mileage is the same for vehicles from both facilities. There are samples of 45 units from each facility.

H0: Gas mileage is the same for vehicles from both facilities. H1: Gas mileage is NOT the same for vehicles from both facilities. 2 independent sample Z test
t-test: N=30

c) A company has three categories of marketing analysts: (1) with professional qualifications but without work experience, (2) with...

...“Accept” the NullHypothesis
by Keith M. Bower, M.S. and James A. Colton, M.S.
Reprinted with permission from the American Society for Quality
When performing statistical hypothesis tests such as a one-sample t-test or the AndersonDarling test for normality, an investigator will either reject or fail to reject the nullhypothesis, based upon sampled data. Frequently, results in Six Sigma projects contain
the verbiage...

...Take Home Test 2
1. A. NullHypothesis: There are no relations or associations among the groups’ mean scores.
Alternate Hypothesis: There is a relation or association among the student’s grade point averages and “if they rather prefer to stay at home than go out with friends”.
Correlations |
| Grade Point Average | I would rather stay at home and read than go out with my friends |
Grade Point Average | Pearson Correlation | 1 | .233 |...

...a population mean
b. hypothesis testing between two proportions
c. estimation of a population mean
d. hypothesis testing between two means
RATIONALE: First, check muna if what they’re looking for is mean or proportions. I’m not really sure, but technique ko dyan, pag may mga decimal point, MEAN YUN. Mostly, ang mga MEAN cases ay yung mga blood pressure (systole, diastole). So in this case, you’re just comparing two drugs. Hence, proportions. Also,...

...methods (52)
NullHypothesis
The nullhypothesis, is an essential part of any research design, and is always tested, even indirectly. The 'null' often refers to the common view of something, and so the nullhypothesis (H0) is a hypothesis in which the researcher tries to disprove, reject or nullify.
Examples of the NullHypothesis
A researcher may...

...Iterative
D. Uses multiple sources of evidence
2. Which of the following describes qualitative research?
A. Concepts are in the form of distinct variables
B. Concepts are in the form of themes, motifs, generalisations and taxonomies
C. Tests hypothesis that the researcher begins with
D. Data are in the form of numbers or precise measurements
3. Which of the following is NOT a qualitative sampling technique?
A. Snowballing
B. Convenience
C. Theoretical
D. Random
4....

...Hypothesis testing using the binomial distribution
Chapter assessment
1. Sweets called “Scruffies” are sold in packets of 18.
Scruffies come in a variety of colours, and market research shows that red is the most popular. Scruffies are packed randomly, and on average 25% are red.
(i) Find the probability that a packet contains no more than 6 red Scruffies. [2]
(ii) Find the probability that a packet contains exactly 4 red Scruffies. [2]
Because of a fault in...

...
Hypothesis Testing Paper
Hypothesis Testing Paper
There are many reliable sources that are readily available for researching topics, whether it is for personal or professional use. Two of these sources are known as the Internet and the Yellow Pages. Based upon the test performed, to determine if the Yellow Pages will become obsolete in the near future, the following information was found based on the...

...be contained between what two values symmetrically distributed around the mean?5.716 AND 4.283 (Homework continues next page )
Hypothesis Testing For problems 5-7: (a) State the nullhypothesis and research hypothesis (b) Perform the calculations to test that hypothesis (show work!) (c) State whether you reject the nullhypothesis or not (d) Draw...

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