54. Eighteen readers took a speed-reading course. The file P09_54.xlsx contains the number of words that they could read before and after the course. Test the alterna- tive hypothesis at the 5%...

Extracted text: 54. Eighteen readers took a speed-reading course. The file P09_54.xlsx contains the number of words that they could read before and after the course. Test the alterna- tive hypothesis at the 5% significance level that reading speeds have increased, on average, as a result of the course. Explain your answer in terms of the p-value. Do you need to assume that reading speeds (before and after) are normally distributed? Why or why not?


Extracted text: Reader Before After 1 250 260 2 300 310 3 320 330 4 340 350 380 390 400 410 7 310 320 8 420 430 360 370 10 390 400 11 321 331 12 213 223 13 263 273 14 450 460 15 430 440 16 420 422 17 150 152 18 190 192