Basic Statistical Concepts - James Madison University
... H0 : “prior belief” statement. Ha : a statement that contradicts H0 . A test of hypothesis is a method for using sample data to decide whether H0 should be rejected. test statistic: a function of sample data on which the decision (reject H0 or do not reject H0 ) is to be based. rejection region: The ...
... H0 : “prior belief” statement. Ha : a statement that contradicts H0 . A test of hypothesis is a method for using sample data to decide whether H0 should be rejected. test statistic: a function of sample data on which the decision (reject H0 or do not reject H0 ) is to be based. rejection region: The ...
Lecture note
... Testing the Population Variance • Example 12.3 (operation management application) – A container-filling machine is believed to fill 1 liter containers so consistently, that the variance of the filling will be less than 1 cc (.001 liter). – To test this belief a random sample of 25 1-liter fills was ...
... Testing the Population Variance • Example 12.3 (operation management application) – A container-filling machine is believed to fill 1 liter containers so consistently, that the variance of the filling will be less than 1 cc (.001 liter). – To test this belief a random sample of 25 1-liter fills was ...
Test 10A - Princeton High School
... population standard deviation is known to be 10 and the sample size is 50. The value of z* to be used in this calculation is (a) 1.960 (b) 1.645 (c) 1.7507 (d) 2.0537 (e) None of the above. The answer is ...
... population standard deviation is known to be 10 and the sample size is 50. The value of z* to be used in this calculation is (a) 1.960 (b) 1.645 (c) 1.7507 (d) 2.0537 (e) None of the above. The answer is ...
Exam Review Sheet
... equally between two local brands, “Secretariat Oats” and “Whirlaway Oats.” a. Define appropriate statistical variables, and use them to state the null and alternative hypotheses that would be used to decide if there was convincing evidence against the hypothesized distribution of purchases across th ...
... equally between two local brands, “Secretariat Oats” and “Whirlaway Oats.” a. Define appropriate statistical variables, and use them to state the null and alternative hypotheses that would be used to decide if there was convincing evidence against the hypothesized distribution of purchases across th ...
Inference Comparing Two Means
... Under the assumptions of independence and equal population standard deviations, this statistic has a t -distribution with n1 + n2 -2 degrees of freedom. The pooled t procedures were common before statistical computer software was available because they are relatively easy to use. However, there are ...
... Under the assumptions of independence and equal population standard deviations, this statistic has a t -distribution with n1 + n2 -2 degrees of freedom. The pooled t procedures were common before statistical computer software was available because they are relatively easy to use. However, there are ...
Stat 100 Final Exam Fall 2002
... b) Find a 95% error margin. c) Determine a 95% confidence interval for the population mean. d) What sample size is needed for a 95% error margin to be 1.3? ...
... b) Find a 95% error margin. c) Determine a 95% confidence interval for the population mean. d) What sample size is needed for a 95% error margin to be 1.3? ...
Ch9b
... Press STAT and select TESTS Scroll down to 2-SampFTest press ENTER Select Input: Data or Stats. For Stats: Type in sx1: (1st sample st. deviation) n1: (1st sample size) sx2: (2nd sample st. deviation) n2: (2nd sample size) choose H1: s1 ≠s2s2
(two tails) (left tail) (right tail)
...
... Press STAT and select TESTS Scroll down to 2-SampFTest press ENTER Select Input: Data or Stats. For Stats: Type in sx1: (1st sample st. deviation) n1: (1st sample size) sx2: (2nd sample st. deviation) n2: (2nd sample size) choose H1: s1 ≠s2
Introduction to the Summer School
... – Sign test – Mann-Whitney two sample test – Kruskal-Wallis test for comparing several samples ...
... – Sign test – Mann-Whitney two sample test – Kruskal-Wallis test for comparing several samples ...
