# Question

Use one of the free statistics programs that we have been using and reproduce the results for

Exercises 12.11 and 12.12. This is an example where it is probably easier to enter the data by hand.

Exercises 12.11 and 12.12. This is an example where it is probably easier to enter the data by hand.

## Answer to relevant Questions

Compare the means and the standard deviations for the distribution of digits in Exercise 12.1 and the sampling distribution of the mean in Exercise 12.2. (a) What would the Central Limit Theorem lead you to expect in this ...Using the data from Table 11.1, compute the 95% confidence limits on the Pupil/Teacher ratio across the 50 states. Modify the data in Exercise 13.6 by shifting the entries in the “12 hour” column so as to increase the relationship between the two variables. Run a t test on the modified data and notice the effect on t. (You could ...Some would object that the data in Exercise 13.1 are clearly discrete, if not ordinal, as defined in Chapter 2, and that it is inappropriate to run a t test on them. Can you think what might be a counter argument? (This is ...Calculate the 95% confidence limits on µ1 2 µ2 for the data in Exercise 14.8. In Exercise 14.8. The data follow:Post your question

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