Brainliest to correct quickly
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Answer:
The mean blood cholesterol level for the sample is 184mg/dl
Step-by-step explanation:
Hello!
When you construct any confidence interval for the mean, the general structure is "estimator±margin of error"
For example under a Z-distribution the formula is
X[bar]±*(σ/√n)
So you subtract or add "*(σ/√n)" to the sample mean. In other words, this type of confidence interval is centered on the sample mean.
If the interval is already calculated, you just have to add both limits and divide by two to get the sample mean.
[166mg/dl;202mg/dl]
sample mean: x[bar]= (166+202) = 184mg/dl
2
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