In a random sample of 800 seniors at Mill Creek High School, 100 students are asked if they prefer graduation at the High School
1 answer:
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Hi there!
We can use the following equation:
z = amount of standard deviations away a value is from the mean (z-score)
σ = standard deviation
x = value
μ = mean
Plug in the knowns for both and rearrange to solve for the mean:
Other given:
Set both equal to each other and solve: