A 100(1 - α)% confidence interval for the mean μ of a normal population when the value of σ is known is given by(x-²a/2" Six+.za/2VM).By how much must the sample size n be increased if the width of the CI above is to be halved?Halving the length requires n to be increased by a factor ofIf the sample size is increased by a factor of 16, what effect will this have on the width of the interval?Increasing the sample size by a factor of 16 will ---Select-- the length by a factor of---Select--increaseNeed Help? Read Itdecrease

here use basic of confidence interval

Answered: By how much must the sample size n be…

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...

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An analysis of variance produces SSbetween = 40, SSwithin = 60, and an F-ratio with df = 2, 15. For this analysis, what is the F-ratio?
16-15. Two simple random samples each of sizen are drawn, one with replacement and dnother without replacement, from a finite population consisting of 50 units. If the number of defective units in the population is 20, find n if the standard error (S.E.) of sample proportion with SRSWOR is times that of SRSWR. Find S.E. of sample proportion with SRSWR.
I just need help with the LAST step. I am stuck... Please help!!! •.. The equation for determining the sample size n= can be obtained by solving the equation for the margin of error E = z. Show that this is true and justify each step. ...... A. Rewrite the equation by solving for zc. B. Rewrite the equation by solving for n. O C. Rewrite the equation by solving for E. O D. Rewrite the equation by solving for o. Solve the equation for the specified variable. State the operation to be performed and simplify both sides of the equation. E = Z. yn Write the original equation. %3D
Draw all possible sample of size n=2 without replacement from the population 3, 6,9,12 from a sampling distribution of the sample means. Hence state and verify the relation between Mean of sampling distribution of the mean and population mean; Variance of the sampling distribution of the mean and population variance.
4- Show that for a sample of n=39, the smallest and the largest Z values are (-1.69) and (1.69), and the middle (the 20th) Z value is 0.00
A survey to find out if families living in a certain municipality are in favor of No mask No entry will be conducted. To ensure that all groups according to their income are represented, respondents will be divided into high-income (Class A), middle (Class B), and low income (Class C). Find the sample size using Slovin's formula and complete the given table. Solve for the value of "?". n=N/ (1+Ne2) No. of Number of STRATA Class A Class B Class C Total Families (N) Samples (n) 1 000 1 500 2 500 Answer:
A sample with size n=4 is drawn from the set 5,6,8,10,12 and 20.Determine the number of possible samples with size 4, Identify the distribution of the sample means, and compute the mean, standard error and variance of the sample means.
The first unit of the sample is selected at random and then each subsequent unit is picked at a fixed from the previous unit selected in the sample. What sampling technique is this?
c) A simple random sample of 200 names from a list of 3042 names and addresses wereinvestigated and the record shows that 38 had wrong addresses. i. Estimate the total number of addresses that needs correction Compute the standard error of your estimate in (i) above .
DEVORESTAT97.2.020. MY NOTES ASK YOUR TEA TV advertising agencies face increasing challenges in reaching audience members because viewing TV programs via digital streaming is gaining in popularity. A poli reported that 55% of 2349 American adults surveyed said they have watched digitally streamed TV programming on some type of device (a) Calculate and interpret a confidence interval at the 99 confidence level for the proportion of all adut Americans who watched streamed programming up to that point in time. (Round yo answers to three decimal places.)
How many possible sample of size n=3 can be drawn from a population of size 12
what would be the standard error of the sampling dis

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