Standard error for a sample proportion, p = 0.8, n = 1200
If the baseball pitcher won 80% of the games he pitched and he pitched 35 ballgames, and you would like to know how many games did he win, you can calculate this using the following steps:
80% of 35 = 80% * 35 = 80/100 *35 = 28 games
Result: The baseball pitcher won 28 games.
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Answer:
5
Step-by-step explanation:
Given :
Observed values = 5, 10, 15
Expected freqencies = 10
χ² = Σ(observed - Expected)² / Expected
χ² = (5-10)²/10 + (10-10)²/10 + (15-10)²/10
χ² = 25/10 + 0/10 + 25/10
χ² = 2.5 + 0 + 2.5
χ² = 5