Suppose that a difference between two groups is examined. In the language of statistics, the alternative hypothesis is a statement that there is

When testing for the significance of the difference between two sample means (2 sample t-test independent), the null hypothesis can be stated as

The Central Limit Theorem states that as sample size becomes large

Which hypothesis test should you perform for the following scenario? You have reason to believe that high risk-seeking youths commit more delinquent acts than low risk-seeking youths. You known from reputable sources that the distribution of number of delinquent acts is approximately normal in the population for both types of youths. In order to answer your research question, you gather a SRS on 40 low risk-seeking youths and 40 high risk-seeking youths to find the mean level of delinquent acts for each group. Based on this information, you should use which test?

What is the primary purpose of a 95% confidence interval for a mean?

What do we call a hypothesis test when the alternative hypothesis includes a possible difference in either direction?

Based on the confidence interval (-0.66457, 1.4077) for a 2 sample t-test dependent, would you reject the null hypothesis? Why?

Which hypothesis test should you perform for the following scenario? You want to find out if the mean number of delinquent acts for girls is equal to 5.25. You know from reputable sources that the distribution of delinquent acts is approximately normal in the population. You take a SRS of 100 girls and get a sample mean of 4.08 and a sample standard deviation of 0.8. Based on this information, you should use which test?

Match the 4 Key Men in the United Kingdom Time Period

How many years were the Southern Kingdom held captive in Babylon?