Chapter 15
... true. Large values of the statistic show that the data are not consistent with H0. The probability, computed assuming H0 is true, that the statistic would take a value as extreme as or more extreme than the one actually observed is called the P-value of the test. The smaller the P-value, the stronge ...
... true. Large values of the statistic show that the data are not consistent with H0. The probability, computed assuming H0 is true, that the statistic would take a value as extreme as or more extreme than the one actually observed is called the P-value of the test. The smaller the P-value, the stronge ...
a. regression b. t-test for independent samples c. matched pairs d
... a. the data are normally distributed b. the mean is larger than the standard deviation c. the population standard deviation is known d. when you are using qualitative rather than quantitative variables e. we want to estimate the value of the statistic ...
... a. the data are normally distributed b. the mean is larger than the standard deviation c. the population standard deviation is known d. when you are using qualitative rather than quantitative variables e. we want to estimate the value of the statistic ...
Assignment 2
... estimate the total number of gallons of water, τ, used daily during the dry spell, and construct an approximate 95% confidence interval for τ. For problem #4.20 in your text (#4.12 ed 5): Construct a 90% confidence interval estimate for the parameter of interest. Using the data in (a), find the samp ...
... estimate the total number of gallons of water, τ, used daily during the dry spell, and construct an approximate 95% confidence interval for τ. For problem #4.20 in your text (#4.12 ed 5): Construct a 90% confidence interval estimate for the parameter of interest. Using the data in (a), find the samp ...
Hypothesis Testing, p-values, Tests of 1 Mean
... Performing Statistical Inference Using the p-value Method It is assumed that you wish to test a hypothesis about some population parameter (e.g., the population mean, μ). For this, you collect and analyze data taken from a sample of size n. Steps: 1. State the null hypothesis, H0 – for example, that ...
... Performing Statistical Inference Using the p-value Method It is assumed that you wish to test a hypothesis about some population parameter (e.g., the population mean, μ). For this, you collect and analyze data taken from a sample of size n. Steps: 1. State the null hypothesis, H0 – for example, that ...
A Technical Summary
... Forecasting by Moving Averages: The best-known forecasting methods is the moving averages or simply takes a certain number of past periods and add them together; then divide by the number of periods. An illustrative numerical example: The moving average of order five are calculated in the following ...
... Forecasting by Moving Averages: The best-known forecasting methods is the moving averages or simply takes a certain number of past periods and add them together; then divide by the number of periods. An illustrative numerical example: The moving average of order five are calculated in the following ...
t distributions
... > SPSS will also calculate these values for you! • There are several types of t tests (covered in the next chapter). • Let’s go over single sample t. ...
... > SPSS will also calculate these values for you! • There are several types of t tests (covered in the next chapter). • Let’s go over single sample t. ...
