Question

Finding x and E: A 98% confidence interval for a population
mean is given as 27.2 < μ < 33.2. Round your answers to 1
decimal place.

(a) Calculate the sample mean.

x =

(b) Calculate the margin of error.

E =

Answer #1

Here in this scenario it is given that A 98% confidence interval for a population mean is given as 27.2 < μ < 33.2.

Now the sample mean and margin of error is calculated using simple steps as below,

The sample mean is 30.2

b) The margin of error E is 3.0.

Thank you.

Finding x and E: A 95%
confidence interval for a population mean is given as 32.8 <
μ < 42.8. Round your answers to 1 decimal
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(a) Calculate the sample mean.
x =
(b) Calculate the margin of error.
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A 95% confidence interval for a population mean is given as 32.2
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(b) Calculate the margin of error. E =

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