The standard deviation for a population is σ=14.8. A sample of 21 observations selected from this population gave a mean equal to 139.05. The population is known to have a normal distribution. Round your answers to two decimal places. a. Make a 99% confidence interval for μ. ( Enter your answer; 99% confidence interval, lower bound ,Enter your answer; 99% confidence interval, upper bound ) b. Construct a 97% confidence interval for μ. ( Enter your answer; 97% confidence interval, lower bound ,Enter your answer; 97% confidence interval, upper bound ) c. Determine a 95% confidence interval for μ.

The standard deviation for a population is σ=14.8. A sample of 21 observations selected from this population gave a mean equal to 139.05. The population is known to have a normal distribution. Round your answers to two decimal places. a. Make a 99% confidence interval for μ. ( Enter your answer; 99% confidence interval, lower bound ,Enter your answer; 99% confidence interval, upper bound ) b. Construct a 97% confidence interval for μ. ( Enter your answer; 97% confidence interval, lower bound ,Enter your answer; 97% confidence interval, upper bound ) c. Determine a 95% confidence interval for μ.

Name: The standard deviation for a population is σ=14.8. A sample of 21 obse
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: The standard deviation for a population is σ=14.8. A sample of 21 observations selected from this population gave a mean equal to 139.05. The population is known to have a normal distribution.Round your answers to two decimal places.a. Make a 99% con

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

A random sample of 88 observations produced a mean x=25.8 and a standard deviation s=2.5. a. Find a 95% confidence interval for μ. b. Find a 90% confidence interval for μ. c. Find a 99% confidence interval for μ. a. The 95% confidence interval is (enter your response here,enter your response here).
Determine the sample size needed to construct a 95% confidence interval to estimate the population mean when the population standard deviation is 563.11, and the margin of error is 73.48. Use two decimal places for the critical value and round to the nearest integer for your final answer. Eg. 48.47 = 49
From the data plot provided please answer the following questions.
A statistics practitioner took a random sample of 55 observations from a population whose standard deviation is 28 and computed the sample mean to be 110. Note: For each confidence interval, enter your answer in the form (LCL, UCL). You must include the parentheses and the comma between the confidence limits. A. Estimate the population mean with 95% confidence. Confidence Interval =| B. Estimate the population mean with 90% confidence. Confidence Interval = C. Estimate the population mean with 99% confidence. Confidence Interval =
Construct the confidence interval for the population mean.
A statistics practitioner took a random sample of 40 observations from a population whose standard deviation is 22 and computed the sample mean to be 96. Note: For each confidence interval, enter your answer in the form (LCL, UCL). You must include the parentheses and the comma between the confidence limits. A. Estimate the population mean with 95% confidence. Confidence Interval = B. Estimate the population mean with 95% confidence, changing the population standard deviation to 42: Confidence Interval = C. Estimate the population mean with 95% confidence, changing the population standard deviation to 6; Confidence Interval =
Construct the confidence interval for the population mean μ. c=0.90, x=16.7, σ=7.0, and n=45
We provide a sample mean, sample size, sample standard deviation, and confidence level. a. use the one-mean t-interval procedure to find a confidence interval for the mean of the population from which the sample was drawn. b. obtain the margin of error by taking half the length of the confidence interval. c. obtain the margin of error by using the formula tα/2•s/√n. x = 30, n = 25, s = 4, confidence level = 90%
Use technology to construct the confidence intervals for the population variance σ2 and the population standard deviation σ. Assume the sample is taken from a normally distributed population. c=0.98, s2=19.36, n=26 a. The confidence interval for the population variance is b. The confidence interval for the population standard deviation is
We provide a sample mean, sample size, sample standard deviation, and confidence level. a. use the one-mean t-interval procedure to find a confidence interval for the mean of the population from which the sample was drawn. b. obtain the margin of error by taking half the length of the confidence interval. c. obtain the margin of error by using the formula tα/2•s/√n. x = 25, n = 36, s = 3, confidence level = 95%
Determine the sample size needed to construct a 98 % confidence interval to estimate the population mean when the population standard deviation is 76.85, and the margin of error is 15.63. Use two decimal places for the critical value and round to the nearest integer for your final answer. Eg. 48.47 = 49
You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals.From a random sample of 66 dates, the mean record high daily temperature in a certain city has a mean of 85.22 F. Assume the population standard deviation is 15.45 F.