A cake recipe calls for 40 milliliters of water for every 20 milliliters of cooking
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Answer:
Step-by-step explanation:
Given that a statistics student would like to estimate the average age of students at her college.
Population std dev =2.5years
For 99% , Z critical = ±2.59
Margin of error =
Simplify to get
n = 167.70
n=168
She must survey 168 people