We would like to estimate the true proportion p of Manitobans who are bilingual (fluent in two languages). We take a random sample of 200 Manitobans and find that 42 of them are bilingual. What is the margin of error for a 95% confidence interval for p?
(A) 0.0565 (B) 0.0353 (C) 0.0693 (D) 0.0288 (E) 0.0404
We would like to estimate the true proportion p of Manitobans who are bilingual (fluent in...
A) A certain region would like to estimate the proportion of voters who intend to participate in upcoming elections. A pilot sample of 25 voters found that 17 of them intended to vote in the election. Determine the additional number of voters that need to be sampled to construct a 95% interval with a margin of error equal to 0.06 to estimate the proportion. The region should sample ____ additional voters. B) Determine the sample size needed to construct a...
What proportion of JMU students like online courses? To estimate this, a random sample of 200 students was taken and found that 50 of them like online courses. (1) Are the assumptions for constructing a confidence interval for the population proportion satisfied? Explain.(2) Construct a 99% confidence interval for the population proportion of JMU students who like online courses.(3) What is the margin of error in (2) ?______________(4) Interpret the 99% confidence interval.
Suppose a hospital would like to estimate the proportion of patients who feel that physicians who care for them always communicated effectively when discussing their medical care. A pilot sample of 40 patients found that 22 reported that their physician communicated effectively. Determine the additional number of patients that need to be sampled to construct a 99% confidence interval with a margin of error equal to 8% to estimate this proportion. the additional patients that need to be sampled is...
A certain region would like to estimate the proportion of voters who intend to participate in upcoming elections. A pilot sample of 50 voters found that 32 of them intended to vote in the election. Determine the additional number of voters that need to be sampled to construct a 95% interval with a margin of error equal to 0.04 to estimate the proportion. The region should sample _____ additional voters.
A university would like to estimate the proportion of fans who purchase concessions at the first basketball game of the season. The basketball facility has a capacity of 3 comma 500 and is routinely sold out. It was discovered that a total of 290 fans out of a random sample of 500 purchased concessions during the game. Construct a 95% confidence interval to estimate the proportion of fans who purchased concessions during the game. The 95% confidence interval to estimate...
Suppose a hospital would like to estimate the proportion of patients who feel that physicians who care for them always communicated effectively when discussing their medical care. A pilot sample of 100 patients found that 70 reported that their physician communicated effectively. Determine the additional number of patients that need to be sampled to construct a 90% confidence interval with a margin of error equal to 1% to estimate this proportion. Answer: The additional number of patients that need to...
A university would like to estimate the proportion of fans who purchase concessions at the first basketball game of the season. The basketball facility has a capacity of 3,600 and is routinely sold out. It was discovered that a total of 230 fans out of a random sample of 500 purchased concessions during the game. Construct a 95% confidence interval to estimate the proportion of fans who purchased concessions during the game.
number 4?
Suppose (0.7,0.9) is a 95% interval estimate for p, the true population proportion. (give answers to two places past decimal) 1. What was p, the sample proportion? Submit Answer Tries 0/99 2. What was the margin of error? Submit Answer Tries 0/99 3. What was the value of Z*0/2? Submit Answer Tries 0/99 4. If you took 40 random samples, and used them to construct 40 seperate 95% Cls for the population proportion, how many of those 40...
Use the normal distribution to find a confidence interval for a proportion p given the relevant sample results. Give the best point estimate for p , the margin of error, and the confidence interval. Assume the results come from a random sample. A 95% confidence interval for the proportion of the population in Category A given that 18% of a sample of 450 are in Category A. Round your answer for the point estimate to two decimal places, and your...
a.) Use the normal distribution to find a confidence interval for a proportion p given the relevant sample results. Give the best point estimate for p, the margin of error, and the confidence interval. Assume the results come from a random sample. Answer all parts please, not just the confidence interval. A 95% confidence interval for p given that p-hat=0.75 and n=100. Round your answer for the point estimate to two decimal places, and your answers for the margin of...