L USE SALT (a) Use the given preliminary estimate to determine the sample size required to estimate the proportion of adult Americans who would like an internet connection in their car to within 0.03 with 95% confidence. (Round your answer up to the nearest whole number.) (b) The formula for determining sample size given in this section corresponds to a confidence level of 95%. How would you modify this formula if a 99% confidence level was desired? 미() 2.33 On= p(1 - On = p(1 - p) On= p(1- p)(2 2.58 1.96 On= p(1- p)() 1.645 On= p(1 - p)( (c) Use the given preliminary estimate to determine the sample size required to estimate the proportion of adult Americans who would like an internet connection in their car to within 0.03 with 99% confidence. (Round your answer up to the nearest whole number.)

L USE SALT (a) Use the given preliminary estimate to determine the sample size required to estimate the proportion of adult Americans who would like an internet connection in their car to within 0.03 with 95% confidence. (Round your answer up to the nearest whole number.) (b) The formula for determining sample size given in this section corresponds to a confidence level of 95%. How would you modify this formula if a 99% confidence level was desired? 미() 2.33 On= p(1 - On = p(1 - p) On= p(1- p)(2 2.58 1.96 On= p(1- p)() 1.645 On= p(1 - p)( (c) Use the given preliminary estimate to determine the sample size required to estimate the proportion of adult Americans who would like an internet connection in their car to within 0.03 with 99% confidence. (Round your answer up to the nearest whole number.)

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

Use z scores to compare the given values. The tallest living man at one time had a height of 238 cm. The shortest living man at that time had a height of 142.4 cm. Heights of men at that time had a mean of 175.45 cm and a standard deviation of 5.59 cm. Which of these two men had the height that was more extreme? ... Since the z score for the tallest man is z = 0 and the z score for the shortest man is z = the man had the height that was Im- more extreme. (Round to two decimal places.) shortest tallest
What sample size is needed to give a margin of error within +3% in estimating a population proportion with 90% confidence? An initial small sample has p = 0.77. %3D Round your answer up to the nearest integer. Sample size =
A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size sample should be obtained if he wishes the estimate to be within 55 percentage points with 90% confidence if (a) he uses a previous estimate of 28%? n=what (b) he does not use any prior estimates? n=what
In a measurement of B two results were obtained, B1 = (8.3+/- 0.78) mT and B2 = (8.81+/- 0.20) mT . The error on the weighted/arithmetic mean is (Report your answer in mT with 3 significant figures)
People were polled on how many books they read the previous year. Initial survey results indicate that s = 14.3 books. Complete parts (a) through (d) below. Click the icon to view a partial table of critical values. GOLDA (a) How many subjects are needed to estimate the mean number of books read the previous year within four books with 90% confidence? This 90% confidence level requires 35 subjects. (Round up to the nearest subject.) (b) How many subjects are needed to estimate the mean number of books read the previous year within two books with 90% confidence? This 90% confidence level requires 139 subjects. (Round up to the nearest subject.) (c) What effect does doubling the re accuracy have on the sample size? OA. Doubling the required accuracy nearly doubles the sample size. B. Doubling the required accuracy nearly halves the sample size. C. Doubling the required accuracy nearly quadruples the sample size. D. Doubling the required accuracy nearly quarters the sample size. (d) How…
The mean score for first exam in your first organic chemistry class (section A) was 60, with a standard deviation of 5. Your score on the exam was 70. A. How many standard deviations above the mean is your score?
Researchers studied the mean egg length (in millimeters) for a bird population. After taking a random sample of eggs, they obtained a 95% confidence interval of (45,60). What is the value of the margin of error? Choose the correct answer below. A. 15 mm B. 52.5 mm O c. 7.5 mm O D. 1.96
Solve for the sample size with the assumption that the confidence coefficient is 95% and second, the population proportion is close to 0.5.
Q7 A researcher wants to estimate the mean income of all physicians in a city at a 95% confidence level. The standard deviation of the incomes of all physicians in this city is RM17,500. What sample size is required to obtain an estimate that is within RM5000 of the population mean?
ANSWER MUST BE IN WHOLE NUMBER 1. Young researchers wants to estimate the average numbers of students spending their time on watching movies. The standard deviation from a previous study is 4 hours. How large a sample must be selected if they want to be: a. 95% confidence from the sample mean by 3.5 hours? b. 99% confidence from the sample mean by 2.5 hours? c. 99% confidence from the sample mean by 3.5 hours?
What sample size is needed to give a margin of error within +2.5% in estimating a population proportion with 99% confidence? We estimate that the population proportion is about 0.3. Round your answer up to the nearest integer. Sample size = ! %3D
Can someone explain the formulas used in these type of questions and where each number belongs in the formula The average size of a farm in Texas is 185 acres. The average size of a farm in Kansas is 220 acres. Assume that the data were obtained from two samples with standard deviations of 40 and 15 acres, respectively, and a sample size of 10 and 12, respectively. Can it be concluded with a=0.05 that the average size of the farms in the two states is different? Assume that the population is normally distributed.