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A professor took a sample of 194 students from her morning

A professor took a sample of 194 students from her morning class and 131 in the evening class. On the 1st exam, all those sampled from the morning class got 64 while those sampled from the evening averaged to 71 with a variance of 179. If the two samples were combined

1. What is the combined exam 1 average ? (66.8215?)

2. What is the combined median for exam 1?

3. what is the shape of the combined exam 1 grade distribution?

4. What is the combined exam 1 Standard deviation?

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Basic Statistics: A professor took a sample of 194 students from her morning

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