Essays Tagged: "Null hypothesis"

Hypothesis testing of the observation ablities/differences of males/females

d based onhypothesis testing. The following hypothesis was established as thecriterion for the test:Null hypothesis (Ho) :Males and females do not have different observational abilitiesAlternative Hyp ...

(4 pages) 620 0 4.7 Nov/1996

Subjects: Social Science Essays > Psychology

Psychology essay notes

" Psychology Take Home Midterm "A. The null hypothesis for this experiment is whether the subjects fall asleep while using Melatonin faster ... ous variables, experimenters use alpha in their process of deciding whether to reject or retain the null hypothesis. I would set the Alpha in this experiment at (.05).D. Independent Variable: the vari ... medication. So this supports the criteria. This will show if Melatonin really works.L. I reject the null hypothesis because the researchers do not even know who will receive the treatment. They joined ...

(12 pages) 303 3 4.7 Dec/2003

Subjects: Literature Research Papers

Investigation in to the effect of caffeine concentrations on daphnia heart rate.

uted sets of dataT-test allows us to assign a probability level to describe the likelihood that the null hypothesis is true.This photo labels where the parts you should look out for in the daphniaResu ... s true.This photo labels where the parts you should look out for in the daphniaResults of experimentNull hypothesis·There will be no significant effect on the heart rate of the daphnia as the c ...

(6 pages) 41 0 4.3 Mar/2004

Subjects: Science Essays > Biology > Human Biology

Correlation analysis

e of a population parameter. Alternative hypothesis is the hypothesis that we try to establish, and null hypothesis is "opposite" of the alternative hypothesis.Statistics brings its features into diff ... we develop here assumes that the price of security is influenced by the indicator, at the same time null hypothesis is the opposite - the absence of indicator's influence over the price of security.Co ...

(2 pages) 183 1 3.5 Mar/2005

Subjects: Science Essays > Mathematics

Hypothesis Testing

AbstractAfter carefully reviewing our previous research study, including the null and alternative hypothesis statements and their related data and its results, we noted an omiss ... figures: the new Atkins' cost is $281.38 and our traditional American diet remains at $162.77. Our null hypothesis states that by switching from a traditional American diet, a family will incur an ad ... an additional increase of at least twenty percent in food costs. This increase would mean that our null hypothesis is H0: 20%. We had anticipated that our research would support our decision not to r ...

(6 pages) 452 0 5.0 Jul/2006

Subjects: Science Essays

Five Step Hypothesis Testing Paper - National Average Gas Price

gas price of $2.297 by using a 5 Step Hypothesis testing technique. The testing will begin with our null and alternate hypothesis statements. Second, we will determine the level of significance or pro ... sis statements. Second, we will determine the level of significance or probability of rejecting the null hypothesis when it is true (Lind, Marchal, Wathwn, 2004). Third we will select a test statistic ...

(6 pages) 582 0 5.0 Jan/2007

Subjects: Businesss Research Papers > Case Studies

ANOVA and Nonparametric Tests

.The outcome was that the test statistic lies outside the acceptance area and you should reject the null hypothesis. As a result, you cannot presume that the population has a normal distribution; you ... s for the row, column, and the interaction are greater that the F critical. That indicates that the null hypotheses for schedule variance, number of defects, and the interaction effect between the two ...

(3 pages) 756 0 4.3 Jan/2007

Subjects: Science Essays > Mathematics

Hypothesis Testing (Gas Prices)

n accepted hypothesis that the gas prices in Florida are in fact cheaper by one penny rather than a null hypothesis that prices in the two states are the same.ProcedureAs in any hypothesis test, the p ... the two states are the same.ProcedureAs in any hypothesis test, the procedure begins by identifying null and alternate hypothesis statements. Next, Team C determines the level of significance or proba ...

(4 pages) 176 0 2.6 Apr/2007

Subjects: Social Science Essays > Economics

ANOVA paper

the researcher must take to perform the ANOVA test is to make a hypothesis statement. The must be a null hypothesis and an alternative hypothesis. The null hypothesis is designated as Ho. The null hyp ... ain an equality. Most of the time, researchers conduct tests will the anticipation of rejecting the null hypothesis. The alternative hypothesis is designated as H1. This hypothesis shows what will be ...

(5 pages) 402 0 5.0 Jun/2007

Subjects: Businesss Research Papers > Case Studies

Yeast And Different Carbohydrate Substrates

I will use, Glucose will produce the highest volume of Carbon Dioxide at every five-minute interval.Null Hypothesis.The null hypothesis that I am composing is that "" the five carbohydrate substrates ... atoms (in the substrate) played a key role in the production of the Carbon Dioxide.In addition, the null hypothesis that was brought into the investigation was not exactly incorrect but it was inaccur ...

(33 pages) 39 0 0.0 Nov/2001

Subjects: Science Essays > Biology

Hypothesis Article Identification Analysis

ll satisfaction/dissatisfaction in these areas" (Williams, 1994). Each area was then divided into a null hypothesis and an alternate hypothesis. The null hypothesis focuses on a statement about the po ... a statement about the population while the alternate hypothesis is the statement accepted when the null hypothesis is rejected. The null hypothesis in this research study focused on proving or dispro ...

(2 pages) 131 0 5.0 Aug/2007

Subjects: Businesss Research Papers

Turn Over Rate For The Texas Retail Industry

t of money training new employees. The mean turnover rate for the Texas retail industry is 13%. The null hypothesis is the turnover rate for the Texas retail industry is 13%. The alternate hypothesis ... of Numerical and Verbal HypothesisHo: μ = 13 %H1: μ ≠ 13 %Level of significance, a=.01The null hypothesis is the mean is not different from 13%, but equals to 13%. The alternate hypothesis i ...

(4 pages) 116 0 3.8 Sep/2007

Subjects: Businesss Research Papers > Management > Management Planning & Decision Making

Advanced Hypothesis Paper

04). The hypothesis suggested that in recent years the suicide rate has increased dramatically. The Null hypothesis would suggest there is no significant increase only more awareness of the situation. ... nificant increase only more awareness of the situation. The final ANOVA analysis indicates that the null hypothesis should not be rejected because there was not significant change, nor could the resea ...

(3 pages) 143 0 3.0 Sep/2007

Subjects: Humanities Essays > Health & Medicine

Hypothesis Identification Analysis

The hypothesis of the study states Americans spend more than they earn (Retirement, 2005).Only the null hypothesis is stated in the article. An alternative hypothesis could be written to state Americ ... ection of less than; therefore, the test would be a one-tailed test of significance. In testing the null and alternative hypothesis, they are considered to be mutually exclusive. Americans cannot both ...

(2 pages) 223 1 1.9 Sep/2007

Subjects: Businesss Research Papers > Management

Prescription stats

generic medications in 2003.Variables n = 307 = = 0.329 a = 0.05 po = 0.41 Step 1: Null and Alternative Hypothesis The null hypothesis is the tested sample proportion being equal or l ... tep 3: Decision Rule We are testing at a significance level of 0.05, which means that we reject the null hypothesis if the computed value of Z* is greater than 1.645. Because -2.886 is less than 1.645 ...

(3 pages) 21 0 3.0 Feb/2008

Subjects: Social Science Essays > Controversial Issues > Drugs & Alchohol

How to Do a One Tailed T-Test in Statistics

In this paper I am going to perform a one-tailed, one-sample t¬-test in order to test the null hypothesis that the average number of ounces of cereal per box equals sixteen. A manufacturer o ... 4 being the highest weight of the cereal. I then used the one-tailed, one-sample t test to test the null hypothesis that the average number of ounces of cereal per box equals sixteen.After completing ...

(2 pages) 56 0 0.0 Feb/2008

Subjects: Science Essays > Chemistry

Real Estate

e if house prices are directly related to the number of bedrooms in a house. In this experiment the null hypothesis is that houses with 3 or more bedrooms sell for more than houses with 2 bedrooms. Th ... andard deviation of $43,612. Based on a 95% confidence interval and a population sample of 105, the null hypothesis will be rejected if the calculated t-value is greater than 1.984 and is therefore, t ...

(5 pages) 258 0 0.0 Mar/2008

Subjects: Businesss Research Papers > Management

Nonparametric Hypothesis Testing

ed by Wages and Wage Earners Data Set (2008). The ANOVA test results failed to reject the following null hypothesis: Ho = Employees in the manufacturing field, who hold clerical, management, or sales ... in other industries.This week, Team B will conduct further research to provide more testing on the null hypothesis by conducting a nonparametric hypothesis test. If a null hypothesis is not rejected ...

(6 pages) 429 0 2.3 Mar/2008

Subjects: Businesss Research Papers > Marketing

Wages for the Ages – Nonparametric Hypothesis Testing

s ages 18-40?The Parametric CounterpartIn the assignment for week three Team A failed to reject the null hypothesis: Wage earners ages 18-40 earn the same pay as wage earners ages 41-65. The significa ... excel data analysis z-test. Comparing the z-statistic with the critical value will determine if the null hypothesis will be rejected or fail to be rejected. If the z-statistic does not fall in the rej ...

(3 pages) 492 0 5.0 Mar/2008

Subjects: Businesss Research Papers > Marketing

Nonparametric Hypothesis Testing Paper week 4

a relationship between chosen occupation and earnings?Numerical and Verbal HypothesisTeam C抯 null hypothesis is that the mean annual income of individuals with educational attainment beyond 12 ... Mann-Whitney Test, one of the most powerful nonparametric tests for comparing two populations. The null hypothesis will test the two populations to see if they have identical means against the altern ...

(5 pages) 831 0 5.0 Mar/2008

Subjects: Businesss Research Papers > Marketing