3 + p = 8
Subtract 3 on both sides
3 + p - 3 = 8 - 3
Simplify both sides
p = 5
Subtract 3 on both sides
3 + p - 3 = 8 - 3
Simplify both sides
p = 5
Use elimination to solve the system of equations. 2X - 3Y = 9 -5X - 3Y = 30
1 answer:
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Answer:
324
Step-by-step explanation:
given that in a poll, 74% of the people polled answered yes to the question "Are you in favor of the death penalty for a person convicted of murder?"
i.e. Sample proportion
Margin of error = 4% = 0.04
Confidence level =90%
Z critical value for 90% = 1.645
Margin of error = 1.645 * std error
Hence std error =
Std error is also equal to
Sample size should be 324.
The formula is sample size = (Z critical value)^2 (pq)/(Margin of error )^2