Choose one page from a magazine or book. Make a copy and attach to your homework.

Estimate the number of words in the text on the page (exclude text for figures and tables and in footnotes, etc.). What is your estimate?

Use a random selection scheme to choose 30 words. Clearly explain your method for choosing this sample. Mark the copy of your page showing your work. Give a list of the 30 words.

Count the number of letters in each word chosen. Compute the mean and standard deviation for the number of letters per word. Show/explain your work.

Give and interpret a 90% confidence interval for the average length of word (in letters) on your chosen page.

Suppose you were to give this page to a friend and ask them to sample 30 words and produce a confidence interval. Which of the following would or would not change? Explain your answers.

The 30 words chosen for the sample

Sample mean

Sample standard deviation

Confidence interval