In a previous year, 56% of females aged 15 and older lived alone. A sociologist tests whether this percentage is different today by conducting a random sample of 400 females ag15 and older and finds that 214 are living alone. Is there sufficient evidence at the a=0.05 level of significance to conclude the proportion has changed?Because npo (1-Po)hypothesis▼satisfied.(Round to one decimal place as needed.)10, the sample size is5% of the population size, and the samplea random sample, all of the requirements for testing the

Answered: In a previous year, 56% of females aged…

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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In a sample of 88 children selected from a city, 8 children suffer from asthma. What is the P-value required to test the claim that the proportion of all children with asthma in the town is equal to 11%?
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7.88 Aluminum cans contaminated by fire. A gigantic NW warehouse located in Tampa, Florida, stores approxi- mately 60 million empty aluminum beer and soda cans. Recently, a fire occurred at the warehouse. The smoke from the fire contaminated many of the cans with black- spot, rendering them unusable. A University of South Florida statistician was hired by the insurance com- pany to estimate p, the true proportion of cans in the warehouse that were contaminated by the fire. How many aluminum cans should be randomly sampled to estimate the true proportion to within .02 with 90% confidence?
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