Overview (cont.)
... Compares mean difference between __ observations (x) to a hypothesized mean of zero* __ __ t = x/(SD/√N) SD is standard deviation of differences N is number of pairs df = N1 _ *Or, another hypothesized mean difference may be substituted via subtraction from x in the formula for t ...
... Compares mean difference between __ observations (x) to a hypothesized mean of zero* __ __ t = x/(SD/√N) SD is standard deviation of differences N is number of pairs df = N1 _ *Or, another hypothesized mean difference may be substituted via subtraction from x in the formula for t ...
1. Eagle Credit Union (ECU) has experienced a 10% default rate
... Since the standard deviations are approximately equal, the number of degrees of freedom is n1 + n2 – 2 = 10 + 12 – 2 = 20. The critical t-value for a 90% confidence interval with 20 degrees of freedom is tcrit = ±1.7247. The limits of the confidence interval are then calculated from: ...
... Since the standard deviations are approximately equal, the number of degrees of freedom is n1 + n2 – 2 = 10 + 12 – 2 = 20. The critical t-value for a 90% confidence interval with 20 degrees of freedom is tcrit = ±1.7247. The limits of the confidence interval are then calculated from: ...
Statistical Inference
... sampling distribution we made conclusions about what was true of the population based upon a probability. In essence in all of those situations we conducted a hypothesis test. A hypothesis test is used to make decisions about some characteristic of the population(s) being studied. A jury trial in th ...
... sampling distribution we made conclusions about what was true of the population based upon a probability. In essence in all of those situations we conducted a hypothesis test. A hypothesis test is used to make decisions about some characteristic of the population(s) being studied. A jury trial in th ...
