3. In 2009 at the height of "Potter-mania" it was found that 67% of the United States population owned at least a single book from the Harry Potter series. I think that my students are different than the national average for Harry Potter book ownership. I take a random sample of 80 students and find that 50 own at least a single Harry Potter Book. If I want a 3.5% chance of committing a type one error, test my claim. l:0H () (b) Find the critical value(s) H (c) Find the test value (d) Acent or reiect H.

3. In 2009 at the height of "Potter-mania" it was found that 67% of the United States population owned at least a single book from the Harry Potter series. I think that my students are different than the national average for Harry Potter book ownership. I take a random sample of 80 students and find that 50 own at least a single Harry Potter Book. If I want a 3.5% chance of committing a type one error, test my claim. l:0H () (b) Find the critical value(s) H (c) Find the test value (d) Acent or reiect H.

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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disproportionately often. In fact, research has shown that if you randomly draw a number from a very large data file, the probability of getting a number with "1" as the leading digit is about 0.301. Now suppose you are an auditor for a very large corporation. The revenue report involves millions of numbers in a large computer file. Let us say you took a random sample of n = 223 numerical entries from the file and r = 48 of the entries had a first nonzero digit of 1. Let p represent the population proportion of all numbers in the corporate file that have a first nonzero digit of 1.(i) Test the claim that p is less than 0.301. Use ? = 0.05. (a) What is the level of significance?State the null and alternate hypotheses. H0: p < 0.301; H1: p = 0.301H0: p = 0.301; H1: p > 0.301 H0: p = 0.301; H1: p < 0.301H0: p = 0.301; H1: p ≠ 0.301 (b) What sampling distribution will you use? The standard normal, since np > 5 and nq > 5. The standard normal, since np < 5 and nq <…
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A news article estimated that only 6% of those ages 65 and older who prefer to watch the news, rather than to read or listen, watch the news online. This estimate was based on a survey of a large sample of adult Americans. Consider the population consisting of all adult Americans ages 65 and older who prefer to watch the news, and suppose that for this population the actual proportion who prefer to watch online is 0.06. (a) A random sample of n = 100 people will be selected from this population and p̂, the proportion of people who prefer to watch online, will be calculated. What are the mean and standard deviation of the sampling distribution of p̂? (Round your standard deviation to four decimal places.) meanstandard deviation (b) Is the sampling distribution of p̂ approximately normal for random samples of size n = 100? Explain. (Select all that apply.) the sampling distribution of p̂ is approximately normalthe sampling distribution of p̂ is not approximately normalnp is…
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