Suppose that 180 of a sample of 800 millennials are married. A) Find the sample proportion...
Suppose that 180 of a sample of 800 millennials are married.
A) Find the sample proportion of millennials who are married.
B) Construct a 95% confidence interval for the proportion of all millennials that are married. Round the endpoints of your interval to the nearest thousandth, if necessary.
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Suppose that 180 of a sample of 800 millennials are married.
A) Find the sample proportion...
In a survey of 2330 adults, 700 say they believe in UFOs. Construct a 95 %...
In a survey of 2330 adults, 700 say they believe in UFOs. Construct a 95 % confidence interval for the population proportion of adults who believe in UFOs. A 95% confidence interval for the population proportion is ( nothing, nothing). (Round to three decimal places as needed.) Interpret your results. Choose the correct answer below. A. With 95% probability, the population proportion of adults who do not believe in UFOs is between the endpoints of the given confidence interval. B....
In a survey of 2280 adults, 709 say they believe in UFOS. Construct a 95% confidence...
In a survey of 2280 adults, 709 say they believe in UFOS. Construct a 95% confidence interval for the population proportion of adults who believe in UFOS. A 95% confidence interval for the population proportion is ( (Round to three decimal places as needed.) ) Interpret your results. Choose the correct answer below O A. With 95% confidence, it can be said that the population proportion of adults who believe in UFOS is between the endpoints of the given confidence...
Question 9 20 pts Assume that a sample is used to estimate a population proportion p....
Question 9 20 pts Assume that a sample is used to estimate a population proportion p. Find the margin of error E that corresponds to the given statistics and confidence level. Round the margin of error to four decimal places. 95% confidence; n = 396 x = 48 Question 10 20 pts Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p. Of 150 adults selected randomly from one town, 30...
Most married couples have two or three personality preferences in common. A random sample of 388...
Most married couples have two or three personality preferences in common. A random sample of 388 married couples found that 120 had three preferences in common. Another random sample of 572 couples showed that 240 had two personality preferences in common. Let p1 be the population proportion of all married couples who have three personality preferences in common. Let p2 be the population proportion of all married couples who have two personality preferences in common. (a) Find a 95% confidence...
part 1. A student was asked to find a 95% confidence interval for the proportion of...
part 1. A student was asked to find a 95% confidence interval for the proportion of students who take notes using data from a random sample of size n = 79. Which of the following is a correct interpretation of the interval 0.12 < p < 0.32? There is a 95% chance that the proportion of notetakers in a sample of 79 students will be between 0.12 and 0.32. There is a 95% chance that the proportion of the population...
Using the sample of size 200, construct a 95% confidence interval for the proportion of Youth...
Using the sample of size 200, construct a 95% confidence interval for the proportion of Youth Survey participants who would describe themselves as being about the right weight (Round to three decimal places.) Sample Proportion = Margin of error Lower limit Upper limit Does your 95% confidence interval based on the sample of size 200 include the true proportion of Youth Survey participants who would describe themselves as being about the right weight? O Yes O No
Most married couples have two or three personality preferences in common. A random sample of 379...
Most married couples have two or three personality preferences in common. A random sample of 379 married couples found that 134 had three preferences in common. Another random sample of 573 couples showed that 215 had two personality preferences in common. Let Pi be the population proportion of all married couples who have three personality preferences in common. Let p2 be the population proportion of all married couples who have two personality preferences in common. (a) Find a 90% confidence...
1. Find the sample size needed to estimate the proportion of houses that have security systems...
1. Find the sample size needed to estimate the proportion of houses that have security systems if the sample proportion h = 0.19, the margin of error is 0.02, and the confidence level is 90%. 2. Suppose that in a random sample of 50 adults, 41 were registered to vote. Construct a 95% confidence level interval for the population proportion of registered voters.
In a survey of 639 males ages 18-64, 398 say they have gone to the dentist...
In a survey of 639 males ages 18-64, 398 say they have gone to the dentist in the past year. Construct 90% and 95% confidence intervals for the population proportion. Interpret the results and compare the widths of the confidence intervals. If convenient, use technology to construct the confidence intervals. The 90% confidence interval for the population proportion p is ( nothing, nothing). (Round to three decimal places as needed.) The 95% confidence interval for the population proportion p is...
1. A simple random sample of 800 automobile owners in a large state revealed that 480...
1. A simple random sample of 800 automobile owners in a large state revealed that 480 purchased cars from Japanese or European car companies. Construct a 95% confidence interval for the proportion of all automobile owners in that state who purchase cars from Japanese or European car companies. 2. There are 400 students currently studying statistics at Breakport University. The average GPA of a random sample of 50 of these students was 3.2 with a sample standard deviation of 0.2....
In a survey of 2280 adults, 709 say they believe in UFOS. Construct a 95% confidence interval for the population proportion of adults who believe in UFOS. A 95% confidence interval for the population proportion is ( (Round to three decimal places as needed.) ) Interpret your results. Choose the correct answer below O A. With 95% confidence, it can be said that the population proportion of adults who believe in UFOS is between the endpoints of the given confidence...
Question 9 20 pts Assume that a sample is used to estimate a population proportion p. Find the margin of error E that corresponds to the given statistics and confidence level. Round the margin of error to four decimal places. 95% confidence; n = 396 x = 48 Question 10 20 pts Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p. Of 150 adults selected randomly from one town, 30...
Using the sample of size 200, construct a 95% confidence interval for the proportion of Youth Survey participants who would describe themselves as being about the right weight (Round to three decimal places.) Sample Proportion = Margin of error Lower limit Upper limit Does your 95% confidence interval based on the sample of size 200 include the true proportion of Youth Survey participants who would describe themselves as being about the right weight? O Yes O No
Most married couples have two or three personality preferences in common. A random sample of 379 married couples found that 134 had three preferences in common. Another random sample of 573 couples showed that 215 had two personality preferences in common. Let Pi be the population proportion of all married couples who have three personality preferences in common. Let p2 be the population proportion of all married couples who have two personality preferences in common. (a) Find a 90% confidence...
1. Find the sample size needed to estimate the proportion of houses that have security systems if the sample proportion h = 0.19, the margin of error is 0.02, and the confidence level is 90%. 2. Suppose that in a random sample of 50 adults, 41 were registered to vote. Construct a 95% confidence level interval for the population proportion of registered voters.
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