# Question

Using the data from Table 11.1, compute the 95% confidence limits on the Pupil/Teacher ratio across the 50 states.

## Answer to relevant Questions

You would probably be nervous about inferring a population estimate and a confidence interval for the mean U.S. SAT Combined score from the data in Table 11.1, but you are probably much less worried about your confidence ...Assume that the mean and the standard deviation of the difference scores in Exercise 13.6 would remain the same if we added more subjects. How many subjects would we need to obtain a t that is significant at a 5 .01 ...For the data in Exercise 13.1, create a scatterplot and calculate the correlation between husband’s and wife’s sexual satisfaction. How does this amplify what we have learned from the analysis in Exercise 13.1? In ...In Exercise 14.8 a significant difference might lead someone to suggest that poor parent– child relationships are the cause of schizophrenia. Why might this be a troublesome conclusion? The t value that you obtain in Exercise 14.1 will be somewhat smaller than the t value from Exercise 13.1. Why should we have anticipated this?Post your question

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