An article written for a magazine claims that 78% of the magazine's subscribers report eatinghealthily the previous day. Suppose we select a simple random sample of 675 of the magazine'sapproximately 50,000 subscribers to check the accuracy of this claim.Assuming the article's 78% claim is correct, what is the approximate probability that less than80% of the sample would report eating healthily the previous day?P(p<0.80) 0.83Option AP(p<0.80)≈ 0.87P(p<0.80)≈ 0.85Option BP(p<0.80)≈ 0.89

Given that the sample size n = 675 The probability of the magazine's subscribers report eating…

Answered: An article written for a magazine…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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You guess repeatedly on an exam that is made up of multiple choice questions, all of which have 5 possible answers. There are 22 problems on the exam. If needed, round your answers below to three decimals. a. To model this situation with a binomial distribution, what would you use for p? b. How many questions would you expect to get right? C. What is the variance? d. What is the probability of getting 4 questions right? Submit Question
A sample of n=64 observation (independently drawn) is selected from a population with mean 20 and s.d.16. What is the probability that the sample mean is less than 15.5?
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Diarrhea Vaccine. Acute rotavirus diarrhea is the leading cause of death among children under age 5, killing an estimated 4.5 million annually in developing countries. Scientists from Finland and Belgium claim that a new oral vaccine is 80% effective against rotavirus diarrhea. Assuming that the claim is correct, use the normal approximation to the binomial distribution to find the probability that, out of 1500 cases, the vaccine will be effective in a. exactly 1225 cases. b. at least 1175 cases. c. between 1150 and 1250 cases, inclusive.
What would be the percentage of this question?
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