P.P Chapter 9.3
... As with proportions, there is a link between a two-sided test at significance level α and a 100(1 – α)% confidence interval for a population mean µ. For the pineapples, the two-sided test at α =0.05 rejects H0: µ = 31 in favor of Ha: µ ≠ 31. The corresponding 95% confidence interval does not include ...
... As with proportions, there is a link between a two-sided test at significance level α and a 100(1 – α)% confidence interval for a population mean µ. For the pineapples, the two-sided test at α =0.05 rejects H0: µ = 31 in favor of Ha: µ ≠ 31. The corresponding 95% confidence interval does not include ...
Class Activity -Hypothesis Testing
... answer: __________________________________________________ c) We conclude with a 99% of confidence that the true mean income of college graduates is between $___________ and $______________ . The error of estimation is $____________ ...
... answer: __________________________________________________ c) We conclude with a 99% of confidence that the true mean income of college graduates is between $___________ and $______________ . The error of estimation is $____________ ...
Statistics
... • Allows us to make meaningful comparisons between groups. • Gives us a means of testing hypotheses. • Allows us to predict the probability of future outcomes ...
... • Allows us to make meaningful comparisons between groups. • Gives us a means of testing hypotheses. • Allows us to predict the probability of future outcomes ...
Week 1: Entering Data And Checking Assumptions
... • True mean reaction time for all women and men in the population is unknowable. • 95% CI = If we repeatedly studied a different random sample of women, 95% of the time the true mean for all women will fall within these upper/lower values. You can do the same calculation for men. • Say you did signi ...
... • True mean reaction time for all women and men in the population is unknowable. • 95% CI = If we repeatedly studied a different random sample of women, 95% of the time the true mean for all women will fall within these upper/lower values. You can do the same calculation for men. • Say you did signi ...
Probability Theory
... 2.3 How many five-card hands of poker include five cards in the same suit that do not have consecutive ranks? This hand is called a flush. 2.4 How many five-card hand of poker include five cards of consecutive rank, representing two or more suits. This hand is called a straight. 2.5 How many five-ca ...
... 2.3 How many five-card hands of poker include five cards in the same suit that do not have consecutive ranks? This hand is called a flush. 2.4 How many five-card hand of poker include five cards of consecutive rank, representing two or more suits. This hand is called a straight. 2.5 How many five-ca ...
Presenting data: can you follow a recipe?
... significance level for P is taken to be 0.05, the common confidence limits used are the 95% intervals. If the study were repeated many times with different samples from the same populations of treated and control frogs, 95% of these range estimates would contain the actual difference between the pop ...
... significance level for P is taken to be 0.05, the common confidence limits used are the 95% intervals. If the study were repeated many times with different samples from the same populations of treated and control frogs, 95% of these range estimates would contain the actual difference between the pop ...
Statistical Analysis 3: Paired t-test
... Notice that this option automatically gives you the sample summary data. The relevant results for the paired t-test are in bold. From this row observe the t statistic, t = 3.231, and p = 0.004; ie, a very small probability of this result occurring by chance, under the null hypothesis of no differenc ...
... Notice that this option automatically gives you the sample summary data. The relevant results for the paired t-test are in bold. From this row observe the t statistic, t = 3.231, and p = 0.004; ie, a very small probability of this result occurring by chance, under the null hypothesis of no differenc ...
Exercises of Statistics
... Exercise 0.7 (5 pt) In a lake there was a die-off of 50% of the fishes of a certain species. Based on the knowledge of the industries present nearby the lake, it is supposed that the causes of this die-off can be mainly attributed to pollution from a substance S1 or from a substance S2 . The probabilit ...
... Exercise 0.7 (5 pt) In a lake there was a die-off of 50% of the fishes of a certain species. Based on the knowledge of the industries present nearby the lake, it is supposed that the causes of this die-off can be mainly attributed to pollution from a substance S1 or from a substance S2 . The probabilit ...