ssume that a sample is used to estimate a population proportion p. Find the margin of error M.E. that corresponds to a sample of size 275 with 28% successes at a confidence level of 99%. M.E. = % Report answer accurate to one decimal place (as a number of percentage points). Answer should be obtained without any preliminary rounding (however, the critical value may be rounded to 3 decimal places).

ssume that a sample is used to estimate a population proportion p. Find the margin of error M.E. that corresponds to a sample of size 275 with 28% successes at a confidence level of 99%. M.E. = % Report answer accurate to one decimal place (as a number of percentage points). Answer should be obtained without any preliminary rounding (however, the critical value may be rounded to 3 decimal places).

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

A sample size must be determined for estimating a population mean given that the confidence level is 99% and the desired margin of error is 0.24. The largest value in the population18 is thought to be and the smallest value is thought to be 6 .
Assume that a sample is used to estimate a population mean . Find the margin of error M.E. that corresponds to a sample of size 21 with a mean of 42.3 and a standard deviation of 6.8 at a confidence level of 95%. Report ME accurate to one decimal place because the sample statistics are presented with this accuracy. M.E. - Answer should be obtained without any preliminary rounding. However, the critical value may be rounded to 3 decimal places.
In order to estimate the proportion of women over 50 who have annual mammograms with a 95% confidence interval within -+0.05, how many women must you interview? Assume that you have no idea what the true proportion might be. Show your work and box answer.
You want to estimate the mean weight of quarters in circulation. A sample of 60 quarters has a mean weight of 5.682 grams and a standard deviation of 0.061 gram. Use a single value to estimate the mean weight of all quarters. Also, find the 95% confidence interval for the average weight of all quarters. The estimate for the mean weight of all quarters is (Round to three decimal places as needed.) grams. Find the 95% confidence interval for the mean weight of all quarters. grams < p< grams (Round to three decimal places as needed.)
Assume that all grade point averages are to be standardized on a scale between 0 and 4. How many grade point averages must be obtained ao that the sample mesn is within 0.01 of the population mean? Assume a 99% confidence level is desired. Is using the range rule of thumb, ó can be estimated as range/4 = 4-0/4 = 1. Does the sample size seem practical?
Find the critical t value for a confidence level of 90% with a sample of size 17. Round your answer to 3 decimal places.
Assume that a sample is used to estimate a population proportion p. Find the margin of error M.E. that corresponds to a sample of size 113 with 24.8% successes at a confidence level of 99.5%.M.E. = %Report answer accurate to one decimal place (as a number of percentage points). Answer should be obtained without any preliminary rounding (however, the critical value may be rounded to 3 decimal places).
Determine the sample size required to estimate a population mean to within 11 units given that the population standard deviation is 50. Use a confidence level of 95%. Sample Size =
A doctor wants to estimate the mean HDL cholesterol of all 20- to 29-year-old females. How many subjects are needed to estimate the mean HDL cholesterol within 2 points with 99% confidence assuming s = 14.8 based on earlier studies? Suppose the doctor would be content with 90% confidence. How does the decrease in confidence affect the sample size required? Click the icon to view a partial table of critical values. A 99% confidence level requires subjects. (Round up to the nearest subject.)
A doctor wants to estimate the mean HDL cholesterol of all 20- to 29-year-old females. How many subjects are needed to estimate the mean HDL cholesterol within 3 points with 99% confidence assuming s= 10.1 based on earlier studies? Suppose the doctor would be content with 90% confidence. How does the decrease in confidence affect the sample size required? Click the icon to view a partial table of critical values. A 99% confidence level requires subjects. (Round up to the nearest subject)
A doctor wants to estimate the mean HDL cholesterol of all 20- to 29-year-old females. How many subjects are needed to estimate the mean HDL cholesterol within 3 points with 99% confidence assuming s = 17.2 based on earlier studies? Suppose the doctor would be content with 90% confidence. How does the decrease in confidence affect the sample size required? Click the icon to view a partial table of critical values. A 99% confidence level requires subjects. (Round up to the nearest subject.) A 90% confidence level requires subjects. (Round up to the nearest subject.) How does the decrease in confidence affect the sample size required? O A. The sample size is the same for all levels of confidence. O B. Decreasing the confidence level decreases the sample size needed. OC. Decreasing the confidence level increases the sample size needed.
Assume that a sample is used to estimate a population proportion p. Find the margin of error M.E. that corresponds to a sample of size 149 with 83.9% successes at a confidence level of 99.5%. M.E. = 0.084 X% Report answer accurate to one decimal place (as a number of percentage points). Answer should be obtained without any preliminary rounding (however, the critical value may be rounded to 3 decimal places).