Dylan wants to determine a 99 percentcontidence interval for the true proportion p of highschool students in the area who attend their homebasketball games. Out of n randomly selected studentshe finds that that exactly half attend their homebasketball games. About how large would n have to beto get a margin of error less than 0.04 for p?n≈

Margin of error(E)=0.04 Assume sample proportion(p^)=0.05

Answered: Dylan wants to determine a 99 percent…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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3 of adults rate themselves as above average drivers. Complete parts (a) through (c). 5 Use the results from a survey of a simple random sample of 1125 adults. Among the 1125 respondents, 69% rated themselves as above average drivers. We want to test the claim that 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 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 a decimal rounded to two decimal places as needed.) (₂)
Only c needs answered
In a taste test, people were given three cups of water to taste. Onewas bottled water and the other two were tap water. Mr. Bullards'class of 21 students participated in this experiment. Assuming youcannot tell the difference, what is the mean and standard deviationfor the number of correct guesses.
A politician wants to estimate the proportion of the voting population in the district who favor the tax proposal. She wants to be able to say her estimate is good to within 2 percentage point with 95% confidence. Assuming she has no prior information about what the proportion might be, she should ask her pollsters to take a sample size of approximately 1692 2401 25 4802 49
The Ice Chalet offers dozens of different beginning iceskating classes. All of the class names are put into a bucket. The 5 P.M., Monday night, ages 8 to 12, beginning ice-skating class was picked. In that class were 66 girls and 14 boys. Suppose that we are interested in the true proportion of boys, ages 8 to 12, in all beginning ice-skating classes at the Ice Chalet. Assume that the children in the selected class are a random sample of the population. state the estimated distribution of x x~ (____,____)
A survey agency has asked students to speculate on whether hot dog is a sandwich or not. Assume half of the survey participants believe that hot dog is a sandwich, while the other half believe it is not. How large a sample would the agency need to select to be 93% confident that the margin of error equals 0.05?
1 V. A randomly selected sample of 1000 college students was asked whether they had ever used the drug STC sixteen percent (16%) of the 1000 students survived said they had. which one of the following statements about the number (0.16) is correct: A. It is a sample proportion. B. it is a population proportion. C.it is a margin of error. D. it is a randomly chosen number
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.
Suppose a random sample of n = 350 teenagers 13 to 17 years of age was asked if they use social media. Of those surveyed, 280 stated that they do use social media. Find the sample proportion of teenagers 13 to 17 years of age who use social media. The sample proportion is p= (Round to three decimal places as needed.) ...
A researcher wants to determine the percentage of American teenagers who send or receive text messages while doing homework. Which of the following techniques would likely be the MOST efficient way of obtaining an accurate estimate for this percentage? 1. Randomly select teenagers from the list of all teenage students in every state in America and mail surveys to those teens, asking them if they send or receive text messages while doing homework. 2. Send a survey to every teenager in America and ask them if they send or receive text messages while doing homework. 3. Randomly select teenagers from the list of all teenage students in one state and mail surveys to those teens, asking them if they send or receive text messages while doing homework.
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.
Suppose that we want to estimate what proportion of gift items purchased at a department store are returned for a refund, and that we want to be "at least 95% sure" that the error of our estimate will be less than 0.05. How large a sample will we need if a. we have no idea what the true proportion might be? b. we know that the true proportion is between 0.01 and 0.20?

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