STATS 250 Lecture 23: Testing About a Population Mean
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Population mean: examples, using our t table to find a p-value for a one-sided test. 1. 761: using to find for a test are test. Values of t-test our t table a p-value two-sided. 0:= 64versus : 64with n = 30 observations and the observed testing statistic is t. = 1. 12. you p-value test? t(29) : classical music. Values of t-test statistic: a researcher wants to test if high school students complete a maze more quickly while listening to classical music. For the general high school population the time to complete the maze is assumed to follow a normal distribution with a mean of 40 seconds. A random sample of 100 high school students will be selected and timed while listening to classical music. = 39. 1 sec; s = 4; n = 100 > 25 => clt applies, Normal (5) study results: the sample mean time was 39. 1 seconds and the sample standard deviation for the times was 4 seconds.