2. Use Slovin's Formula to compute for the value of n (number of samples) needed if thepercentage of error is set at 3%. Then compute for the number of samples needed in eachYear Level using Stratified Proportional Sampling. Show your complete solution.(10 pts)POPULATION OF ENGINEERING STUDENTSYear LevelNumber of StudentsFirst Year880Second Year640Third Year450Fourth Year370Fifth Year160N=2500

Sample is taken from the population. It represent any fraction of the population. The technique used…

Answered: 2. Use Slovin's Formula to compute for…

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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Apply the Slovin’s formula to calculate the minimum sample size for a population of 3,658 when e = 0.10.
If all other values are held constant, what happens to the value of t when sample size increases ?
In a hypothetical scenario, the National Institute of Standards and Technology has received a new replica of The Kilogram. It is weighed five times. The measurements are as follows, in units of micro-grams above 1 kg: 114.3, 82.6, 136.4, 126.8, 100.7. a) Is it possible to estimate the uncertainty in these measurements? If so, estimate it. If not, explain why not. b) Is it possible to estimate the bias in these measurements? If so, estimate it. If not, explain why not.
for a sample of 9 automobiles, the mileage (in 1000s of miles) at which the original front brake pads were worn to 10% of their original thickness was measured, as was the mileage at which the original rear brake pads were worn to 10% of their original thickness. The results were as follows: Car Rear Front 1 41.2 32.2 2 36.3 27.2 3 45.8 34.7 4 46.6 37.3 5 39.6 30.7 6 52.3 40.5 7 51.7 41.0 8 46.3 33.8 9 47.4 36.8 a)Construct a 99.8% confidence interval for the difference in mean lifetime between the front and rear brake pads. Let d represent the mileage of the rear pads minus the mileage of the front ones. Round the answers to at least two decimal places. b)Because the confidence interval (contains/does not contain) values above 10 (in 1000s of miles), it (contradicts/does not contradict) the claim that the mean lifetime for rear brake pads is more than 10,000 miles more than the mean lifetime for front brake pads.
In order to determine whether the significant difference in the durability of 3makes of computers, samples of size 5 are selected from each make and the frequency of repair during the first year of purchase is observed. The results are as follows: In view of the above data, what conclusion can you draw?MakesA B C5 8 76 10 38 11 59 12 47 4 1
A state-by-state survey found that the proportions of adults who are smokers in state A and state B were 23.1% and 17.2%, respectively. (Suppose the number of respondents from each state was 2000.) At α=0.05, can you support the claim that the proportion of adults who are smokers is greater in state A than in state B? Assume the random samples are independent. Complete parts (a) through (e).
The following data consist of the present school enrollment of the Dr. Vesse High School. A study on the recent teaching strategies will be conducted in this school. Year Level First Second Third Fourth Population size 150 185 220 245 1.a.) How many samples should the research take if she will use 1 % margin of error, at an α=0.05? 1.b.) If 500 will be taken as sample, how many students from the fourth year should be drawn? 1.c.) What sampling method should she be used to draw the samples from the total population of students?
Suppose that a random sample of size 1 is to be taken from a finite population of size N. a. How many possible samples are there?b. Identify the relationship between the possible sample means and the possible observations of the variable under consideration.c. What is the difference between taking a random sample of size 1 from a population and selecting a member at random from the population?
Professor Moore is interested in examining the commute times of her students to class.. Here is a sample of daily commute times (in minutes) of 42 students. 24 30 20 60 15 25 15 25 34 12 25 5 25 35 40 20 17 30 25 25 25 20 45 15 30 6 4 4 25 20 15 15 3 20 10 15 15 10 7 18 22 6 A. Are there any outliers? Show your calculations.
1-If testing the difference between two population proportions under independent sampling, you pool the sample proportions and compute as p=(x1+x2/ (n1+n2). Group of answer choices if the population proportions are assumed equal if the difference in the population proportions is hypothesized to be different than zero All of these choices are correct if the difference in the population proportions is hypothesized to be zero. 2-A consumer magazine wants to figure out which of two major airlines lost a higher proportion of luggage on international flights. The magazine surveyed Standard Air (population 1) and Down Under airlines (population 2). Standard Air lost 45 out of 600 bags. Down Under airlines lost 25 of 450 bags. Does Standard Air have a higher population proportion of lost bags on international flights? Which of the following is the appropriate p-value? Group of answer choices 0.1056 0.1634 0.0817 0.8366 Please step by step answer.

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