Introduction to Statistics, Lecture 5
... high power (usually at least 80%): Metode 3.48: The one-sample, one-sided sample size formula: For the one-sided, one-sample t-test for given α, β and σ: ...
... high power (usually at least 80%): Metode 3.48: The one-sample, one-sided sample size formula: For the one-sided, one-sample t-test for given α, β and σ: ...
Tests of Goodness of Fit and Independencec
... Step 5. Use the value of the test statistic and the rejection rule to determine whether to reject H0. We will reject H0 if z < - 1.96 or if z > 1.96 Because the value of the test statistic is z=1.53, the statistical evidence will not permit us to reject the null hypothesis at the .05 level of signif ...
... Step 5. Use the value of the test statistic and the rejection rule to determine whether to reject H0. We will reject H0 if z < - 1.96 or if z > 1.96 Because the value of the test statistic is z=1.53, the statistical evidence will not permit us to reject the null hypothesis at the .05 level of signif ...
H 0 - eLisa UGM
... In many cases, the alternative hypothesis focuses on one particular direction H0: μ ≤ 3 H1: μ > 3 H0: μ ≥ 3 ...
... In many cases, the alternative hypothesis focuses on one particular direction H0: μ ≤ 3 H1: μ > 3 H0: μ ≥ 3 ...
Course Review Chapter 9 Testing Hypotheses
... 4. Computing the test statistic, e.g., converting the sample mean to a Z statistic or t statistic. Let’s use an example to compute the test statistic: If we assume that our sample mean family income for Native Americans is $22,400 and that our mean family income for the U.S. population is $28,985, t ...
... 4. Computing the test statistic, e.g., converting the sample mean to a Z statistic or t statistic. Let’s use an example to compute the test statistic: If we assume that our sample mean family income for Native Americans is $22,400 and that our mean family income for the U.S. population is $28,985, t ...
Chapter 3: Testing Hypotheses with Data 3.1 Concepts of
... This logical relationship between a hypothesis H and data D means that using data can in logic only refute a hypothesis. If the data are inconsistent with the hypothesis then we know that the hypothesis is wrong. If the data are not inconsistent with the hypothesis then ... well, the hypothesis migh ...
... This logical relationship between a hypothesis H and data D means that using data can in logic only refute a hypothesis. If the data are inconsistent with the hypothesis then we know that the hypothesis is wrong. If the data are not inconsistent with the hypothesis then ... well, the hypothesis migh ...
Stats worksheet
... Biologists need to feel confidence in their results in order to say that a difference occurred due to a biological reason. They will only accept this if they have greater than 95% confidence. If they have less than 95%confidence, they are only willing to say that the difference between the results o ...
... Biologists need to feel confidence in their results in order to say that a difference occurred due to a biological reason. They will only accept this if they have greater than 95% confidence. If they have less than 95%confidence, they are only willing to say that the difference between the results o ...
the indicated conclusion in nontechnical terms. Be sure
... hypothesis, alternative hypothesis, test statistic, critical value(s) or P-value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. 36) The mean resting pulse rate for men is 72 beats per minute. A simple random sample of men who regularly work out at Mitc ...
... hypothesis, alternative hypothesis, test statistic, critical value(s) or P-value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. 36) The mean resting pulse rate for men is 72 beats per minute. A simple random sample of men who regularly work out at Mitc ...
Null and alternative hypotheses
... made (b) state a very clear rule for making the decision, and (c) compute the necessary information to use this clear and unambiguous decision rule. First, let's see how researchers define their decisions as a choice between two options: a null hypothesis and an alternative hypothesis. ...
... made (b) state a very clear rule for making the decision, and (c) compute the necessary information to use this clear and unambiguous decision rule. First, let's see how researchers define their decisions as a choice between two options: a null hypothesis and an alternative hypothesis. ...
Test - WordPress.com
... Definition : Critical probability or critical level or Pvalue of hypothesis H0 , *, is the level of test at which one rejects H0 given the results of observations. The critical level * depends on the results of observations and test that uses. Knowing the critical level *, we can say what deci ...
... Definition : Critical probability or critical level or Pvalue of hypothesis H0 , *, is the level of test at which one rejects H0 given the results of observations. The critical level * depends on the results of observations and test that uses. Knowing the critical level *, we can say what deci ...
§9.3--Hypothesis Tests for One Population Mean When is Known
... The alternative hypothesis will be of one of three forms: left-tailed, two-tailed, or right-tailed. We are assuming that the null hypothesis is true and we are looking for evidence to the contrary. We will reject H0 only when the evidence suggests that something improbable has occurred. The signific ...
... The alternative hypothesis will be of one of three forms: left-tailed, two-tailed, or right-tailed. We are assuming that the null hypothesis is true and we are looking for evidence to the contrary. We will reject H0 only when the evidence suggests that something improbable has occurred. The signific ...
Inference about a Mean Vector
... - Use the Decision Rule to Evaluate the Test Statistic and Decide Whether to Reject or Not Reject the Null Hypothesis –1.761 t 1.761, i.e., –1.761 -1.748 1.761 so do not reject H0. At a = 0.10. the sample evidence does not refute the claim that the mean of X2 is -1.5. ...
... - Use the Decision Rule to Evaluate the Test Statistic and Decide Whether to Reject or Not Reject the Null Hypothesis –1.761 t 1.761, i.e., –1.761 -1.748 1.761 so do not reject H0. At a = 0.10. the sample evidence does not refute the claim that the mean of X2 is -1.5. ...
H 0
... “unlikely”, so-called “the level of significance” • “Unlikely” means that this difference occurs with probability α = 0.05 of the time, or less under the null hypothesis • This concept applies to two-tailed tests, left-tailed tests, and right-tailed tests Note: α is often determined subjectively bef ...
... “unlikely”, so-called “the level of significance” • “Unlikely” means that this difference occurs with probability α = 0.05 of the time, or less under the null hypothesis • This concept applies to two-tailed tests, left-tailed tests, and right-tailed tests Note: α is often determined subjectively bef ...
