Question

You want to obtain a sample to estimate a population mean. Based
on previous evidence, you believe the population standard deviation
is approximately σ=77.3. You would like to be 99% confident that
your esimate is within 1 of the true population mean. How large of
a sample size is required?

*n* =

Answer #1

You want to obtain a sample to estimate a population mean. Based
on previous evidence, you believe the population standard deviation
is approximately σ=72.7. You would like to be 99% confident that
your esimate is within 3 of the true population mean. How large of
a sample size is required?
n =

You want to obtain a sample to estimate a population mean. Based
on previous evidence, you believe the population standard deviation
is approximately σ = 56.5 . You would like to be 98% confident that
your esimate is within 4 of the true population mean. How large of
a sample size is required?
n =

You want to obtain a sample to estimate a population mean. Based
on previous evidence, you believe the population standard deviation
is approximately σ = 75.2 . You would like to be 99% confident that
your estimate is within 5 of the true population mean. How large of
a sample size is required?
n =

You want to obtain a sample to estimate a population mean. Based
on previous evidence, you believe the population standard deviation
is approximately σ=28.5σ=28.5. You would like to be 99% confident
that your estimate is within 1.5 of the true population mean. How
large of a sample size is required?
n = ????

You want to obtain a sample to estimate a population mean. Based
on previous evidence, you believe the population standard deviation
is approximately σ = 75.1 . You would like to be 99% confident that
your estimate is within 1 of the true population mean. How large of
a sample size is required? Do not round mid-calculation.
n =

You want to obtain a sample to estimate a population mean. Based
on previous evidence, you believe the population standard deviation
is approximately σ = 42.2 . You would like to be 99% confident that
your estimate is within 5 of the true population mean. How large of
a sample size is required?

You want to obtain a sample to estimate a population
mean. Based on previous evidence, you believe the population
standard deviation is approximately σ = 67.4. You would like to be
99% confident that your estimate is within 4 of the true population
mean. How large of a sample size is required?

We want to obtain a sample to estimate a population mean. Based
on previous evidence, researchers believe the population standard
deviation is approximately σ=20.6. We would like to be 90%
confident that the esimate is within 5 of the true population mean.
How large of a sample size is required?
n=??????????? ROUND UP ANSWER TO THE NEAREST WHOLE NUMBER

You want to obtain a sample to estimate a population mean. Based
on previous evidence, you believe the population standard deviation
is approximately σ=59.2. You would like to be 98% confident that
your estimate is within 10 of the true population mean. How large
of a sample size is required?
n = __________________

You want to obtain a sample to estimate a population mean. Based
on previous evidence, you believe the population standard deviation
is approximately σ = 63.5 . You would like to be 98% confident that
your estimate is within 4 of the true population mean. How large of
a sample size is required? n = ?

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