DTC Quantitative Methods Statistical Inference II: Statistical Testing
... • To obtain the p-value for this t-value (score) we could consult a table of critical values for the t-distribution. • Such a table may not have a row of probabilities for 38 degrees of freedom (d.f.) In that case we (to be cautious) would refer to the row for the nearest reported number of degrees ...
... • To obtain the p-value for this t-value (score) we could consult a table of critical values for the t-distribution. • Such a table may not have a row of probabilities for 38 degrees of freedom (d.f.) In that case we (to be cautious) would refer to the row for the nearest reported number of degrees ...
Ngawang Tsering CONFIDENCE INTERVAL ESTIMATES In general
... know how to use, z, t and chi square table. My sample met these conditions because the data were there with sample size. After that I calculated all the mean and standard deviation. The question includes the other parts such as confidence level, proportion of the sample that we need to find. Using t ...
... know how to use, z, t and chi square table. My sample met these conditions because the data were there with sample size. After that I calculated all the mean and standard deviation. The question includes the other parts such as confidence level, proportion of the sample that we need to find. Using t ...
Lecture 4. Independence and total probability rule
... manufactured parts contains 50 parts that do not meet customer requirements. Suppose two parts are selected from a batch, but the first part is not replaced before the second part is selected (sampling without (w/o) replacement). Calculate the probability of an event B, that the second part is defec ...
... manufactured parts contains 50 parts that do not meet customer requirements. Suppose two parts are selected from a batch, but the first part is not replaced before the second part is selected (sampling without (w/o) replacement). Calculate the probability of an event B, that the second part is defec ...
data prep and descriptive stats
... Chi-square test results are unstable if cell count is lower than 5 ...
... Chi-square test results are unstable if cell count is lower than 5 ...
Number 75 - Winter 2010 - American Statistical Association
... According to the representative I spoke with, “While we mix the colors as thoroughly as possible, the above ratios may vary somewhat, especially in the smaller bags.” This last comment really generated the concept that if I could have the class sample from the population of M&M’s, we could generate ...
... According to the representative I spoke with, “While we mix the colors as thoroughly as possible, the above ratios may vary somewhat, especially in the smaller bags.” This last comment really generated the concept that if I could have the class sample from the population of M&M’s, we could generate ...
