Calculate the test statistic and the p-value when x = 145, s = 50, and n = 100. Use a 5% significance level. H0: mu = 150 H1: mu less than 150 a. Calculate the p -value of the test of the following hypotheses given that ...
Figure 1.The formula for the test statistic. Image — Prepared by the Autor using Powerpoint. WhereOis theobserved frequencyandEis theexpected frequency. 6. Calculating Chi-Square Statistics 6.1 Calculating Expected Frequency The Chi-square statistics for the table outlined below ar...
The z-test statistic is the inferential test statistic used for a testing hypothesis about population means under the following assumptions. i. Samples are random and independent. ii. Population standard deviation is given or known. iii. Sample is normally di...
Statisticians can use Excel to quickly and easily calculate the p-value. Although Microsoft does not have any specific or direct formula for p-value in Excel, we can use functions like T.TEST and T.DIST for the calculation. Moreover, there is another method: Analysis ToolPak, that basically...
Percentile is a statistic that measures the value below a certain percentage of specific values. The percentile rank is a standard metric to report results from competitive exams such as college entrance tests. For instance, if the 95th percentile score on a test is 80%, 95% of test takers ...
Chi-Square test is a statistical hypothesis for a given set of categorical data. Learn its p-value, distribution, formula, example for categorical variables, properties, degree of freedom table here at BYJU'S.
Real GDP adjusts nominal GDP so that it reflects the price levels that prevailed in a reference year, called the "base year." YoY Change in Real GDP How GDP Is Used GDP is an important statistic that indicates whether an economy is growing or contracting. In the U.S., the government ...
What is a Chi-Square Statistic? The formula for the chi-square statistic used in the chi square test is: The chi-square formula. The subscript “c” is the degrees of freedom.“O” is your observed value and E is your expected value. It’s very rare that you’ll want to actually ...
For each of the following situations, find the degrees of freedom for the F statistic and then use a table to approximate the P-value. (Enter your P-values to four decimal places.) (a) Seven groups a State True or False: The shape of a chi-square distribution i...
Given sample of n_1=30 from a population whit known standard deviation \sigma_1=10, and an independent sample of n_2=30 from another population with known standard deviation \sigma_2=15, what is the value of the Z test statistic for testing H_0:\mu_1...