Question 7What is the smallest sample size that guarantees that the margin of error is less than 18 when constructinga 98% confidence interval for a population mean with the assumed population standard deviation of 893.69?(Round UP to the nearest integer)

Sol:- The formula for the margin of error for a 98% confidence interval for a population mean with a…

Answered: Question 7 What is the smallest sample…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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If the age of the US population has a standard deviation of 17 years, how many observations would be needed to ensure that a 99% confidence interval for the average age in the sample had a margin of error of less than 1 year? Note* Recall the margin of error is 1/2 of the total width of the confidence interval. 1110 1564 1918 782
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SAT scores are normally distributed with a mean of 1,500 and a standard deviation of 300. An administrator at a college is interested in estimating the average SAT score of first-year students. If the administrator would like to limit the margin of error of the 96% confidence interval to 5 points, how many students should the administrator sample? Make sure to give a whole number answer.
In order to determine the true mean pulse rate of New York citizens you take a sample of 16 and the sample mean is 72 with a standard deviation of 9 beats per minute. Based on this data, the 95% confidence interval for the true mean pulse rate of New York Citizens is 72 plus or minus________?
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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.)
"The population standard deviation for the age of a certain University students is 13 years. If we want to be 90% confident that the sample mean age is within 3 years of the true population mean age of the University students, then how many randomly selected students must be surveyed? Chosse closest possible answer." 40.0000 34 50.0000 23 100 correct answer?
Hello, can you help me with this math problem and show me step by step to understand this math problem. Thank you. In a random sample of 8, people the mean commute time to work was 36.5 mins and the standard deviation was 7.4 mins . A 98% confidence interval using the t-distribution was calculated (2.87, 44.3). After researching commute times to work, it was found that the population standard deviation is 8.8 mins. Find the margin of error and construct a 98% confidence interval using the standard normal distribution with the appropriate calculations for a standard deviation that is known. Compare the results. The margin of error of μ is________ (Round to two decimal places as needed.)
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Question 7 What is the smallest sample size that guarantees that the margin of error is less than 18 when constructing a 98% confidence interval for a population mean with the assumed population standard deviation of 893.69? (Round UP to the nearest integer)