The logical 0 returned by each test indicates a failure to reject the null hypothesis that the samples are normally distributed. This failure may reflect normality in the ...
http://www.mathworks.com/access/helpdesk/help/toolbox/stats/f13924.html

Therefore, any observed different between the two samples must have occurred by chance. These assumptions are called the null hypothesis. To prove that the two means are ...
http://www.ferris.edu/htmls/colleges/artsands/Biology/ResearchScience/SPFormalHypothesisTesting.cfm

To illustrate we will take the example of the binomial distribution for 2 samples each of n trials, and take as our null hypothesis that the data come from a common ...
http://fisher.forestry.uga.edu/popdyn/Power.html

... The output generated by this option includes the chi square statistic, along with its degrees of freedom and probability value, for the null hypothesis that the samples ...
http://dmcsoftware.com/hypothes.htm

According to the null hypothesis, any observed difference in samples is due to chance or sampling error. The term that statisticians often use to indicate the statistical hypothesis ...
http://www.isixsigma.com/dictionary/Null_Hypothesis_Ho-290.htm

Comparing samples - null hypothesis: Format: Last updated: Multimedia slides with audio narration; handout; quiz: 10 February 2008: Content (11:49)
http://www.criticalappraisal.com/online-course/vlectures/340.html

If ? is less than the p-value, accept the null hypothesis. Rule #7: The matched pairs t-test differs from the tests of two means in that the samples are dependent samples rather ...
http://discuss.cga-canada.org/tm.asp?m=10584

The null hypothesis states that these 3 groups are random samples from normally distributed populations with the same mean. It is further assumed, regardless of whether the null ...
http://www.angelfire.com/wv/bwhomedir/notes/anova1.pdf

samples of the nu... ... Main Entry: null hypothesis: Part of Speech: n: Definition: the proposition that is to be ...
http://dictionary.reference.com/browse/null+hypothesis

... for the Significance of the Difference between the Means of Two Independent Samples ... Null Hypothesis Recall from Chapter 7 that whenever you perform a statistical test, what you ...
http://faculty.vassar.edu/lowry/ch11pt1.html

In each case, there is no need to reject the null hypothesis that the samples have a normal distribution. Suppose it is historically true that the standard deviation of gas prices ...
http://northstar-www.dartmouth.edu/doc/matlab6.5/toolbox/stats/hypothe4.html

One assumption which is made is that the survey results are based on random probability samples. The null hypothesis. The first step in evaluating sample results is to set up a null ...
http://www.fao.org/docrep/W3241E/w3241e08.htm

Hypothesis Testing about a mean - small samples. In all the samples given in section 2 and 3, n > 30. ... in the critical region, so you should Fail to Reject the null hypothesis.
http://wind.cc.whecn.edu/~pwildman/statnew/section_4_hypothesis_testing_about_the_mean_-_small_samples.htm

This lesson introduces hypothesis testing: statistical hypothesis, null hypothesis ... Estimating a proportion; Proportions and small samples; Difference between proportions
http://stattrek.com/Lesson5/HypothesisTesting.aspx

... know that the standard deviation of ppm lead between samples is .005, do you reject that the lead level is less than 5 ppm? Because 4.998 is consistent with the null hypothesis ...
http://cns2.uni.edu/~campbell/stat/inf4.html

If differences across sample means are "large" relative to differences within samples, then we should reject the null hypothesis that the samples are all drawn from the same ...
http://simon.cs.vt.edu/SoSci/converted/ANOVA/activity.html

Alternatively, the null hypothesis can postulate that the two samples are drawn from the same population, so that the variance and shape of the distributions are equal, as well as ...
http://psychology.wikia.com/wiki/Null_hypothesis

... in which probabilistic statements can only be made about the relative frequencies of events in arbitrarily large samples. One way in which a failure to reject the null hypothesis ...
http://www.answers.com/topic/null-hypothesis

Large Samples. Null Hypothesis: H o:? = ? o (e.g., 0) Alternative Research Hypotheses: One sided (uni-directional): H 1:? > ? o, or H o:? < ? o; Double sided:
http://wiki.stat.ucla.edu/socr/index.php/AP_Statistics_Curriculum_2007_Hypothesis_L_Mean

Null Hypothesis and "p value" Most of our biological work involves whether or not there ... occur by chance or whether it is so large that it signifies that the two samples are ...
http://nsm1.nsm.iup.edu/rwinstea/null-p.shtm

Small Samples. Null Hypothesis: H o:? = ? o (e.g., 0) Alternative Research Hypotheses: One sided (uni-directional): H 1:? > ? o, or H o:? < ? o; Double sided:
http://wiki.stat.ucla.edu/socr/index.php/AP_Statistics_Curriculum_2007_Hypothesis_S_Mean

Different Statistical Tests. T test Aim. To compare the averages of two groups of samples. Null Hypothesis. The means of the two groups are the same. Assumptions of unpaired and ...
http://www.edu.rcsed.ac.uk/statistics/Different%20statistical%20tests.htm

Hypothesis Testing for a mean - large samples. Hypothesis testing with one mean on the TI-83 ... Since the p-value is in the critical region, you would reject the null hypothesis in ...
http://wind.cc.whecn.edu/~pwildman/statnew/hypothesis_testing_for_a_mean_-_large_samples.htm

If the difference between the means of the samples is among those that would occur rarely by chance when the null hypothesis is true, the null hypothesis is rejected and the ...
http://www.animatedsoftware.com/statglos/sgnullhy.htm

For example, if we want to compare the test scores of two random samples of men and women, the null hypothesis would be that the mean score in the male population from which the ...
http://su.wikipedia.org/wiki/Null_hypothesis

The Null Hypothesis: Samples and Populations So, we begin with the assumption that the Null Hypothesis is true. If it is, in fact, true, any apparent relationship is the result of ...
https://www.msu.edu/user/sw/statrev/strv47.htm

... random samples are collected, and then the samples are used to test a hypothesis about the ... The null hypothesis for a statistical test is the assumption that the test ...
http://www.basic.northwestern.edu/statguidefiles/sg_glos.html

Increasing the sample size improves a test's power, as the graph below illustrates. Larger samples have the power to reject the null hypothesis correctly even when the true and ...
http://moon.ouhsc.edu/dthompso/CDM/power/hypoth.htm

That is, the two samples have both been drawn from the same population. This null hypothesis is tested against one of the following alternative hypotheses, depending on the ...
http://www.stats.gla.ac.uk/steps/glossary/hypothesis_testing.html