Free

Hypothesis Testing & Variance - Research Paper Example

Summary

In the paper “Hypothesis Testing & Variance” the author analyzes a two tailed test of hypothesis, which is equal to inquiring whether the 95% interval of confidence for the means takes into consideration the hypothesized mean. This implies that the null hypothesis cannot be ignored…

Download full paper File format: .doc, available for editing

GRAB THE BEST PAPER97.9% of users find it useful

Read Text Preview

Subject: Statistics
Type: Research Paper
Level: High School
Pages: 2 (500 words)
Downloads: 2

Extract of sample "Hypothesis Testing & Variance"

Hypothesis Testing & VarianceIntroduction.A two tailed test of hypothesis at 5 percent significant level (μ = .05) is equal to inquiring whether the 95% interval of confidence for the means takes into consideration the hypothesized mean. Whenever the confidence interval includes the mean that is hypothesized an alternate or null hypothesis could be formulated. This implies that the null hypothesis cannot be ignored. This paper explores the t-tests and z-tests.Test 1.Hypothesis Test 1 looking at intrinsic satisfaction by Gender.

Alternate and null hypotheses.H0: μ = 5.2 and H0 is not equal to 5.2. (alpha is 0.05)Table 1:t-Test: Paired Two Sample for Means IntrinsicGenderMean5.0787881.5Variance0.5703120.253846Observations6666Pearson Correlation-0.04448Hypothesized Mean Difference5.2df65t Stat-14.2189P(T

CHECK THESE SAMPLES OF Hypothesis Testing & Variance

Hypothesis Testin Paper

874 variance 0.... 988 Observations 10 10 Pooled variance 0.... hellip; If BOD increases, it can be said that the effluent contains more organic matter than the stream can handle. The null hypothesis, H0, represents a theory that has been put forward, either because it is believed to be true or because it is to be used as a basis for argument, but has not been proved....

4 Pages (1000 words) Essay

Samples, Hypothesis Testing/Variance, and Regression Analysis

In this article there is a discussion on the sample sizes, it is discussed that it is important to select the appropriate sample size, if we select the large sample then it's the wastage of money, the sample size should be as much that could provide the accuracy that we… It is important to decide before starting the project that does the researcher wants to analyze the entire data or plan on a more detailed examination of subgroups within the sample or how much accuracy they want in their results. The question of number of subgroups is For example, if we are considering the data of job satisfaction so we must decide that do we want to analyze the satisfaction level of employee according to gender or as a whole....

3 Pages (750 words) Essay

Unit 4/DB - Hypothesis Testing and Variance

In essence, Lejins (1966) notes Unit 4/DB - hypothesis testing and Variance Crime has for long proved to be difficult to measure.... For this reason, every state requires statistics of crimes committed by individuals in its criminal justice system.... Uniform Crime report was formed in 1929 by the international Association of Chiefs of police in order to… The committee of police chiefs established that the number of felonies identified by police force would best serve as the measure of the state's criminality....

1 Pages (250 words) Essay

Fundamentals of Hypothesis Designing and Testing

This process is termed hypothesis testing and is one of two main areas of Definition: A statistical hypothesis is an assertion regarding the distribution of a variable or variables.... The method of conducting any statistical hypothesis testing can be outlined in six steps: The alternative hypothesis, which we denote by H1, expresses the idea of some difference.... The objective in all hypothesis testing is to set the Type I error level, also known as the significance level, at a low enough value, and then to use a test statistic which minimizes the Type II error level for a given sample size....

4 Pages (1000 words) Essay

Santa Fe Grill Restaurant Survey

67 assuming equal variance.... This means that there is limited evidence that the variances aren't equal and the variance assumption homogeneity may fit.... 06 is within groups mean square estimate of variance.... Therefore, the appropriate test for testing this hypothesis is independent sample t-test, which… Table 1 provides a descriptive statistics for each of the two given groups .... o we fail to reject the null hypothesis....

15 Pages (3750 words) Essay

Statistics for Managers Individual work2 wk6

teps for Hypothesis Testing Variance in Par, Inc.... ail to reject the null hypothesis (not in tails)H0:σ12= σ22 ; we think variances are equal but not convinced variances are equalSteps for hypothesis testing for Means in Par, Inc.... 82192P(F F-critical, the differences in variance between the two models are not-statistically different.... 4872F Test: Two-Sample for Variances (testing for variances):Inter-ratio dataTwo populationsNormal DistributionInterdependent random sample(s)Therefore, we are going to proceed with t Test with Two-Samples assuming equal variancesTo estimate the proportions of the current and new models, we use f-t test sample for two variances (Sawilowsky, 2002)....

2 Pages (500 words) Essay

The Use of ANOVA Research Method

Analysis of variance (ANOVA) statistical technique in research is a method that is applied in testing statistical significance difference that exists between two or more mean.... However, variance in statistics and probability distributive theory is used to measure the differences… ANOVA statistical method is termed as analysis of variance rather than the analysis of the mean due to the statistical inferences obtained in the research about the mean For example, ANOVA method is applied, in general, statistical difference rather than distinct difference of the research mean (Hox 2010, 35)....

9 Pages (2250 words) Essay

Statistical Package for the Social Sciences Program

ethodology:Method Used: To test the null hypothesis Analysis of variance (ANOVA) method is used.... art IIQuestion 1:hypothesis:H0: There is no improvement in the range of movement over time.... This assignment "Statistical Package for the Social Sciences Program" presents the results that we obtained and it is clear that prematurely born infants are different from full-term infants in terms of mother's education, income, and depression level....

14 Pages (3500 words) Assignment