In a population proportion study, you can decrease the sample size by:
decreasing alpha
conducting a pilot study
decreasing E
assuming p-hat to be 0.25
In a population proportion study, you can decrease the sample size by: decreasing alpha conducting a...
(1 point) You are conducting a study to estimate the population proportion of people who follow college football. You suspect that the population proportion is around 0.15. What size of sample do you need, so that you can use a normal distribution to approximate p ^ p^ , the sample proportion of people who follow college football?
Below, n is the sample size, p is the population proportion and p-hat is the sample proportion. Use the Central Limit Theorem and the TI-84 calculator to find the probability. Round the answer to at least four decimal places. n=48 p=0.14 Find P(0.11< p-hat < 0.19) =_________
Use the given data to find the minimum sample size required to estimate the population proportion. Margin of error: 0.09; confidence level: 90%; from a prior study, (p-hat) is estimated by 0.17.
A population proportion is 0.3. A sample of size 100 will be taken and the sample proportion p will be used to estimate the population proportion. Round your answers to four decimal places 2 of the population proportion? a. what is the probability that the sample proportion will be within ±0.0 b. What is the probability that the sample proportion will be within +0.06 of the population proportion? s A simple random sample of 100 orders will be used to...
An insurance company is interested in conducting a study to estimate the population proportion of teenagers who obtain a driving permit within one year of their 16th birthdays. A level of confidence of 99% will be used and an error of no more than .04 is desired. There is no knowledge as to what the population proportion will be. The sample size should be at least t6th birthdays. A level ofortion will be. The O 1036 O 160 0 41...
You are conducting a study to see if the proportion of women over 40 who regularly have mammograms is significantly different from 0.48. You use a significance level of α=0.002α0.002. H0:p=0.48H0p0.48 H1:p≠0.48H1p0.48 You obtain a sample of size n=490n490 in which there are 216 successes. What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value =
You are conducting a hypothesis test for the population proportion. You selected a sample of 30 items from a population of 375 items. Which formula will you us to calculate the test statistic? a sep)= p*(1-p)/n O se(P)= [p*(1-P)]/n]*((N - n)/(N − 1) Ocselp) = VP*(1 - Žin od se(k)= Vis?/n]*((N = n)/(N − 1)] se()= P*(1-P)/nI(N-n)/(N - 1)] of se()=slvn
(1 point) A. Determine the sample size required to estimate a population proportion to within 0.032 with 99% confidence, assuming that you have no knowledge of the approximate value of the sample proportion. Sample Size = B. Repeat the previous problem, but now with the knowledge that a prior study found a sample proportion of approximately 0.33. Sample Size = Note: The table in Sullivan that gives values for ??/2zα/2 is not accurate. Make sure to use the following values...
A population proportion is 0.5. A sample of size 200 will be taken and the sample proportion p will be used to estimate the population proportion. Round your answers to four decimal places. a. What is the probability that the sample proportion will be within ±0.03 of the population proportion? b. What is the probability that the sample proportion will be within ±0.07 of the population proportion?
A population proportion is 0.5. A sample of size 200 will be taken and the sample proportion p will be used to estimate the population proportion. Round your answers to four decimal places. a. What is the probability that the sample proportion will be within ±0.02 of the population proportion? b. What is the probability that the sample proportion will be within ±0.06 of the population proportion?