A survey to find out if families living in a certainmunicipality are in favor of No mask No entry will beconducted. To ensure that all groups according to theirincome are represented, respondents will be divided intohigh-income (Class A), middle (Class B), and low income(Class C).Find the sample size using Slovin's formula and completethe given table. Solve for the value of "?".n=N/ (1+Ne2)No. ofNumber ofSTRATAClass AClass BClass CTotalFamilies (N) Samples (n)1 0001 5002 500Answer:

Strata No. of Families (N) Number of Samples (n) Class A 1000 Class B 1500 Class C 2500…

Answered: A survey to find out if families living…

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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You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. How many randomly selected air passengers must you survey? Assume you want to be 90% confident that the sample percentage is within 2.5 percentage points of the true population percentage. Completed parts a and b below. A.) assume that nothing is known about the percentage of passengers who prefer aisle seats. N= ____ (round up to the nearest integer) B.) assume that a prior survey suggest that about 35% of air passengers prefer an aisle seat. N=____ (round up to the nearest integer)
Suppose a sample of 830830 Americans over 4141 is drawn. Of these people, 673673 don't smoke. Using the data, estimate the proportion of Americans over 4141 who smoke. Enter your answer as a fraction or a decimal number rounded to three decimal places.
How many samples or treatments are here? 490 undergraduate students at a state university in the southwestern region of the United States were surveyed. Each student in the sample was classified according to class standing (freshman, sophomore, junior, or senior) and body are category (body piercings only, tattoos only, both tattoos and body piercings, no body art). Use the data in the accompanying table to determine if there is an association between class standing and body art category. Assume that it is reasonable to regard the sample as representative of the students at this university. Use α = 0.01. Freshman Sophmore Junior Senior Body Piercings 61 7 14 86 Only Tattoos 43 11 10 64 Only Mildly Piercings and Tattoos 20 9 7…
As part of a sixth-grade class project the teacher brings to class a jar containing 200 gumballs of two different colors: red and green. Andy is asked to draw a sample of his own choosing and estimate the number of red gumballs in the jar. Andy draws a sample of 25 gumballs, of which 8 are red and 17 are green. Use Andy's sample to estimate the number of red gumballs in the jar. There are approximately Answer red gumballs in the jar.
Use the results from a survey of a simple random sample of 1120 adults. Among the 1120 respondents, 71% rated 3 of adults rate themselves as above average 5 themselves as above average drivers. We want to test the claim that drivers. Complete parts (a) through (c). a. Identify the actual number of respondents who rated themselves as above average drivers. (Round to the nearest whole number as needed.) b. Identify the sample proportion and use the symbol that represents it. (Type an integer or a decimal rounded to two decimal places as needed.) c. For the hypothesis test, identify the value used for the population proportion and use the symbol that represents it. ▼= (Type an integer or a decimal rounded to two decimal places as needed.)
Use the results from a survey of a simple random sample of 1108 adults. Among the 1108 respondents, 84% rated themselves as above average drivers. We want to test the claim that 3/4 of adults rate themselves as above average drivers. a. Identify the actual number of respondents who rated themselves as above average drivers.
Three students want to estimate the mean pencil weight of their schoolmates.To do this, they each randomly chose 5 schoolmates and weighed their pencils. The samples are shown in the table.
A choral conductor has 1885 singers in her choir, some of them are professional singers. The conductor wants to estimate what percentage of singers are professional, but can't ask all 1885, so she instead asks 630 singers in front and finds 17 who are professionals. (a) Identify the sample.A. 17/1885B. 630C. singers who were askedD. None of the above. (b) Identify the populationA. percentage of entire singers who are professionalB. entire singersC. 17/1885D. None of the above. (c) What specific type of bias does this scenario demonstrate?A. Voluntary response samplingB. Convenience SamplingC. It is representative of the population.D. None of the above. (d) Identify the parameterA. range of values in which 95% values fallB. percentage of entire singers who are professionalC. 17D. None of the above.
Use the applet below to select a random sample of 9 babies from the town. Assume μ = 3,500. Repeat many times to observe how the mean birth weights for the samples vary. Then answer the following question. Click to generate a random sample of the weights of 9 babies Population: babies born in town this year Average birth weight in grams: µ = 3500 Sample: 3271 3467 4015 3440 3451 3528 2901 3471 4244 Sample statistic: & = 3532 Sampling Distribution 3,000 3,100 3,200 3,300 3,400 3,500 3,600 3,700 3,800 3,900 4,000 Sample Means: 3704, 3663, 3548, 3398, 3494, 3513, 3503, 3818, 3492, 3447, 3550, 3271, 3542, 3589, 3491, 3532
As part of a sixth-grade class project the teacher brings to class a large jar containing 200 gumballs of two different colors: red and green. Andy is asked to draw a sample of his own choosing and estimate the number of red gumballs in the jar. Andy draws a sample of 25 gumballs, of which 21 are red and the rest are green. Use Andy's sample to estimate the number of red gumballs in the jar. Answer:

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