Question

Assume that a sample is used to estimate a population mean \mu. Find the 99\% confidence interval for a sample of size 50 with a mean of 73.1 and a standard deviation of 12.4. Enter your answer as an open-interval (low, high) <font accurate to one decimal place (because the sample statistics are reported accurate to one decimal place). 99\% C.I. = Answer should be obtained without any preliminary rounding. However, the critical value may be rounded to 3 decimal places.

          Assume that a sample is used to estimate a population mean \mu. Find the
99\% confidence interval for a sample of size 50 with a mean of 73.1 and a
standard deviation of 12.4. Enter your answer as an open-interval (low, high) <font accurate to one decimal place (because the sample statistics
are reported accurate to one decimal place).
99\% C.I. = 
Answer should be obtained without any preliminary rounding. However, the
critical value may be rounded to 3 decimal places.

Assume that a sample is used to estimate a population mean μ. Find the
99% confidence interval for a sample of size 50 with a mean of 73.1 and a
standard deviation of 12.4. Enter your answer as an open-interval (low, high) <font accurate to one decimal place (because the sample statistics
are reported accurate to one decimal place).
99% C.I. =
Answer should be obtained without any preliminary rounding. However, the
critical value may be rounded to 3 decimal places.

Added by Linda M.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert Ahmet Yavas

08/12/2023

Step 1

Step 1: The formula for a confidence interval for a population mean is: $$\bar{x} \pm z_{\alpha/2} \frac{s}{\sqrt{n}}$$ where: * $\bar{x}$ is the sample mean * $s$ is the sample standard deviation * $n$ is the sample size * $z_{\alpha/2}$ is the critical value from Show more…

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Assume that a sample is used to estimate a population mean $\mu$. Find the 99% confidence interval for a sample of size 50 with a mean of 73.1 and a standard deviation of 12.4. Enter your answer as an open-interval (low, high) <font accurate to one decimal place (because the sample statistics are reported accurate to one decimal place). 99% C.I. - Answer should be obtained without any preliminary rounding. However, the critical value may be rounded to 3 decimal places.