Find the sample size needed to estimate the mean age of movie patrons such that it can be said with 95% confidence that the sample mean is within 2.5 years of thepopulation mean. Assume that o=19.6 years, based on a previous report. Could the sample be obtained from one movie at one theater?The required sample size is. (Round up to the nearest integer.) Couldthe sample be obtained from one movie at one theater?A. The sample should be obtained from one movie at one theater, because that sample is representative of the population.B. The sample should not be obtained from one movie at one theater, because that sample could be easily biased. Instead, a simple random sample of thebroader population should be obtained.C. The sample should not be obtained from one movie at one theater, because that sample could be easily biased. Instead, a stratified sample of the broaderpopulation should be obtained.OD.The sample should not be obtained from one movie at one theater, because that sample could be easily biased. Instead, a cluster sample of the broaderpopulation should be obtained.

Given,population standard deviation(σ)=19.6margin of error(E)=2.5α=1-0.95=0.05α2=0.025Z0.025=1.96…

Answered: Find the sample size needed to estimate…

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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The population mean will always be the same as the mean of all possible X that can be computed from samples of size 38. O True O False
What sample size is needed to give a margin of error within +1 in estimating a population mean with 99% confidence, assuming a previous sample had s = 2.9. Round your answer up to the nearest integer. sample size=
The finite population correction is most useful for which of the following? a. It adjusts the estimated mean when the sample size is a large fraction of the population size. b. It adjusts the standard error of the mean when the sample size is a small fraction of the population size. c. It adjusts the estimated mean when the sample size is a small fraction of the population size. d. It adjusts the standard error of the mean when the sample size is a large fraction of the population size.
may i know the answer??????????
Assume that the population proportion is 0.46. Compute the standard error of the proportion, σp, for sample sizes of 500,000; 1,000,000; 5,000,000; 10,000,000; and 100,000,000. (Round your answers to five decimal places.) sample size of 500,000sample size of 1,000,000sample size of 5,000,000sample size of 10,000,000sample size of 100,000,000 What can you say about the size of the standard error of the sample proportion as the sample size is increased? The standard error of the sample proportion, σp, ---Select--- increases decreases and becomes extremely ---Select--- small large as the sample size becomes huge.
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)
Determine the sample size associated with the following formula. Remember to always round up to the next highest whole number. ?=[(1.96)⋅(3.56)0.16]2n=[(1.96)⋅(3.56)0.16]2
2. The population standard deviation for the age of Fictional College students is 8.4 years. If we want to be 95% confident that the sample mean age is within one year of the true population mean age of Fictional College students, how many randomly selected Fictional College students must be surveyed?
(Round up to the nearest whole number as needed.)
Please help with part e
The reaction times for a random sample to a stimulant were recorded as 2.5, 3.6, 3.1, 4.3, 2.9. 2.3, 2.6, 4.1, and 3.4 seconds. Calculate the median. O 4.1 O 3.1 O 2.9 3.33333

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