T_test
... Student ‘s t-test will be used: --- When Sample size is small and for the following situations: (1) to compare the single sample mean with the population mean (2) to compare the sample means of two indpendent samples (3) to compare the sample means of paired samples ...
... Student ‘s t-test will be used: --- When Sample size is small and for the following situations: (1) to compare the single sample mean with the population mean (2) to compare the sample means of two indpendent samples (3) to compare the sample means of paired samples ...
Lecture 3 (May 8)
... Are They Independent or Paired? 1. Miles per gallon ratings of cars before & ...
... Are They Independent or Paired? 1. Miles per gallon ratings of cars before & ...
12 - JustAnswer
... Use these results to test H0: u = 3 and Ha: u not equal to 3 at alpha = 0.05. Give the critical region, the computed test statistic, and the conclusion. (6 pts) Ans: H0 : M’ = 3 Ha : M’ not equal to 3 X bar = 3 s = 0.0667 Test statistic = 3 – 3 / 0.0067 = 0 Since test statistic is 0, this means that ...
... Use these results to test H0: u = 3 and Ha: u not equal to 3 at alpha = 0.05. Give the critical region, the computed test statistic, and the conclusion. (6 pts) Ans: H0 : M’ = 3 Ha : M’ not equal to 3 X bar = 3 s = 0.0667 Test statistic = 3 – 3 / 0.0067 = 0 Since test statistic is 0, this means that ...
t test - Indiana University
... Step 2: setting the level of risk (or the level of significance or Type I error) associated with the null hypothesis ...
... Step 2: setting the level of risk (or the level of significance or Type I error) associated with the null hypothesis ...
(s/sqrt(n)) - People Server at UNCW
... standardized Xbar doesn’t have a Z distribution anymore, but a so-called t-distribution with n-1 degrees of freedom… • Since s is unknown, the standard deviation of Xbar, s/sqrt(n), is unknown. We estimate it by the so-called standard error of Xbar, s/sqrt(n), where s=the sample standard deviation. ...
... standardized Xbar doesn’t have a Z distribution anymore, but a so-called t-distribution with n-1 degrees of freedom… • Since s is unknown, the standard deviation of Xbar, s/sqrt(n), is unknown. We estimate it by the so-called standard error of Xbar, s/sqrt(n), where s=the sample standard deviation. ...
Ch 15
... A cereal manufacturer can take a sample of boxes from the production line and check whether the mean weight of the samples differs from 1.3 pounds at some confidence level. ...
... A cereal manufacturer can take a sample of boxes from the production line and check whether the mean weight of the samples differs from 1.3 pounds at some confidence level. ...
