A federal report indicated that 29% of children under age 6 live in poverty in Arkansas, an increase over previousyears. How large a sample is needed to estimate the true proportion of children under age 6 living in poverty inArkansas within 4% with 90% confidence? Round the intermediate calculations to three decimal places and roundup your final answer to the next whole number.n=allo

The random variable is children under age 6 who live in poverty in Arkansas.The value of the…

Answered: A federal report indicated that 29% of…

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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Find the sample size required to estimate the percentage of statistics students who take their statistics course online. Assume that we want 95% confidence that proportion from the sample is within two percentage points of the true population percentage.
For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding.In a marketing survey, a random sample of 728 women shoppers revealed that 630 remained loyal to their favorite supermarket during the past year (i.e., did not switch stores). (a) Let p represent the proportion of all women shoppers who remain loyal to their favorite supermarket. Find a point estimate for p. (Round your answer to four decimal places.)(b) Find a 95% confidence interval for p. (Round your answers to three decimal places.) lower limit upper limit
A federal report indicated that 28% of children under age 6 live in poverty in Kentucky, an increase over previous years. How large a sample is needed to estimate the true proportion of children under age 6 living in poverty in Kentucky within 5% with 90% confidence? Round the intermediate calculations to three decimal places and round up your final answer to the next whole number. n =
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23% of the students graduating from a local high school received scholarships to college. If 163 students graduating received scholarships to college, how many students total graduated from the local high school? You must show work and explain your estimation. Estimation: Exact answer: (nearest whole number)
How many Biology students’ records need to be sampled to estimate the percentage who earn "A"s to within 4.5% with 98% confidence?
A national military bureau for a certain country collects data on active members in the military. Results are published in a national journal. According to the document, 75.4% of military members are in the reserves and 10.4% of military members are Black and in the reserves. What percentage of military members in the reserves are Black? Roughly % of military members in the reserves are Black. (Type an integer or a decimal. Round to one decimal place as needed.) View an example Get more help. N @ 2 F2 W S #3 X مه H command 20 F3 E D S4 000 000 $ C F4 R F % 5 V FS T G ^ 6 B F6 Y & 7 H 44 F7 U C N * 8 ➤11 10 FB D - 61 M ▶ K F9 O II . : ; F11 { alt [ option + +11 ? = 1 Check answer 4) 11 I F12 } 1 ( delete 1 ente ret
Express each of your first five answers as a decimal and round to the nearest 0.001 (in other words, type 0.123, not 12.3% or 0.123456).What fraction of survey respondents identified themselves as Democrats? What fraction of survey respondents thought the economy was getting better? What fraction of Democrats thought the economy was getting better?
A federal report indicated that 23% of children under age 6 live in poverty in Ohio, an increase over previous years. How large a sample is needed to estimate the true proportion of children under age 6 living in poverty in Ohio within 4% with 90% confidence? Round the intermediate calculations to three decimal places and round up your final answer to the next whole number. n=
The state education commission wants to estimate the proportion of tenth-grade students in the state who read at or below the eight-grade level. The commissioner wants an estimate with a 90% level of confidence and an error of at most 5%? Step 1 of 2 : Assuming the commissioner has no prior knowledge about the proportion, how large of a sample would be required for the commissioner to make the desired estimate? Round your answer up to the next integer.
A foundation conducted a survey of physicians' attitude about health care reform, calling the report "a survey of 100,000 physicians." The survey was sent to 100,000 randomly selected physicians practicing in the United States: 38,000 via post-office mail and 62,000 via email. A total of 2,474 completed surveys were received. What is the rate of nonresponse for this survey? (Round your answer to two decimal places.)
Using the following scenario, calculate the value of the point estimate. What proportion of students are willing to report cheating by other students? A student project put this question to an SRS of 229 undergraduates at a large university: "You witness two students cheating on a quiz. Do you go to the professor?" Only 25 answered "yes". Round your answer to two decimal places.

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