Name Date Ch. 10 – WS #6 Ex 1: Does the job satisfaction of
... two groups. Both groups did similar assembly work, but one work setup allowed workers to pace themselves and the other featured an assembly line that moved at fixed time intervals so that the workers were paced by machine. After two weeks, all subjects took a survey about job satisfaction. Then they ...
... two groups. Both groups did similar assembly work, but one work setup allowed workers to pace themselves and the other featured an assembly line that moved at fixed time intervals so that the workers were paced by machine. After two weeks, all subjects took a survey about job satisfaction. Then they ...
Chapter 8
... • If (1 or 2 is unknown and samples are taken from normally-distributed) OR If (1 or 2 is unknown and both sample sizes are greater than or equal to 30) THEN a t-test may be used to test the difference between the population means μ1 and μ2. • Three conditions are necessary to use a t-test for s ...
... • If (1 or 2 is unknown and samples are taken from normally-distributed) OR If (1 or 2 is unknown and both sample sizes are greater than or equal to 30) THEN a t-test may be used to test the difference between the population means μ1 and μ2. • Three conditions are necessary to use a t-test for s ...
Review for Quiz on Topics 14 – 16
... 10) State parameter or statistic for each of the following variables and write the symbol associated with it. a) mean weight of all high school students b) standard deviation of weights of 20 high school students at North c) proportion of “odds” rolled on a fair six-sided dice 11) Comment on the fol ...
... 10) State parameter or statistic for each of the following variables and write the symbol associated with it. a) mean weight of all high school students b) standard deviation of weights of 20 high school students at North c) proportion of “odds” rolled on a fair six-sided dice 11) Comment on the fol ...
document
... • Except in the case of small samples, the condition that the data are SRSs from the populations of interest is more important than the condition that the population distributions are Normal. • Sum of the sample sizes less than 15: Use t procedures if the data appear close to Normal. If the data are ...
... • Except in the case of small samples, the condition that the data are SRSs from the populations of interest is more important than the condition that the population distributions are Normal. • Sum of the sample sizes less than 15: Use t procedures if the data appear close to Normal. If the data are ...
Chapter 12 one sample mean and intro to t
... a family of distributions, one for every (n) Not actually n, but degrees of freedom df = n –1 larger df (larger n) = s2 better estimate for 2 larger df (larger n) = t gets closer to normal curve ...
... a family of distributions, one for every (n) Not actually n, but degrees of freedom df = n –1 larger df (larger n) = s2 better estimate for 2 larger df (larger n) = t gets closer to normal curve ...
