Professor Matt took a sample of 208 students from her morning class and a sample of 119 students from her evening class. On Exam 1, all those sampled from the morning class got a 70 while those sampled from the evening class averaged a 69 with a variance of 182. If Professor Matt combines these two samples ...
1) What is the combined Exam 1 standard deviation?
Professor Bruce took a sample of 210 students from her morning class and a sample of 127 students from her evening class. On Exam 1, all those sampled from the morning class got a 72 while those sampled from the evening class averaged a 68 with a variance of 153. If Professor Bruce combines these two samples ...
2) The shape of the combined Exam 1 grade data has a _____ distribution?
A) Mound-Shaped Symmetrical
B) Skewed Right
C) Skewed Left