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2. The manager of a local restaurant wants to estimate the percentage of the restaurant's patrons...
19A telecommunications company wants to estimate the proportion of households that would purchase an additional telephone...
19A telecommunications company wants to estimate the proportion of households that would purchase an additional telephone line if it were made available at a substantially reduced installation cost. Data are collected from a random sample of 500 households. The results indicate that 160 of the households would purchase the additional telephone line at a reduced installation cost. Complete parts (a) and (b) below. a. Construct a 99% confidence interval estimate for the population proportion of households that would purchase the...
ASAP HELP!! A History professor at a local community college wants to estimate the percent of...
ASAP HELP!!
A History professor at a local community college wants to estimate the percent of college students that cheat on online assessment. Out of 100 college students sampled, 39 had cheated. Based on this, construct a 99% confidence interval for the proportion p of college students that have cheated in his history class. Make sure to express your answers as decimals, to three places. Use the point estimate and margin of error to express the same answer. Give your...
Uan wants to estimate the percentage of people who will vote for issue A on the next election. He...
uan wants to estimate the percentage of people who will vote for issue A on the next election. He surveys 150 Individuals and finds that 81 will vote for issue A. Find the margin of error for the confidence interval for the population proportion with a 90% confidence level. Z0.10 Z0.05 0.0251 z0.01 0.005 1.2821 1 :645| 1.960||2.326|2.576 Use the table of common z-scores above. Round the final answer to three decimal places
uan wants to estimate the percentage of...
The manager of a large supermarket wants to use a 95 percent confidence interval to estimate...
The manager of a large supermarket wants to use a 95 percent confidence interval to estimate the true proportion of the market's customers who buy cookies from the market. After collecting data from a random sample of customers, he calculates the confidence interval to be (0.236,0.282)(0.236,0.282). Which one of the following statements is true? Select one: A. The confidence interval provides convincing evidence that more than 25 percent of the market's customers buy cookies from the market. B. There is...
Jane wants to estimate the proportion of students on her campus who eat cauliflower. After surveying...
Jane wants to estimate the proportion of students on her campus who eat cauliflower. After surveying 15 students, she finds 2 who eat cauliflower. Obtain and interpret a 95% confidence interval for the proportion of students who eat cauliflower on Jane's campus using Agresti and Coull's method. Construct and interpret the 95% confidence interval. One is 95% confident that the poplulation of students who eat cauliflower on janes campus is between___and ____? *Use the corrent z store interval for 95%...
The owner of a local golf course wants to estimate the difference between the average ages...
The owner of a local golf course wants to estimate the difference between the average ages of males and females that play on the golf course. He samples a group of men and women and then uses the sample statistics to calculate a 99% confidence interval of (6.28, 21.77). This interval estimates the difference of (the average age of men - the average age of women). What can we conclude from this interval? Question 8 options: 1) We are 99%...
The owner of a local supermarket wants to estimate the difference between the average number of...
The owner of a local supermarket wants to estimate the difference between the average number of gallons of milk sold per day on weekdays and weekends. The owner samples 24 weekdays and finds an average of 242.462 gallons of milk sold on those days with a standard deviation of 36.143. 28 Saturdays and Sundays are sampled and the average number of gallons sold is 335.717 with a standard deviation of 43.83. If a 95% confidence interval is calculated to estimate...
A public relations manager for the Cincinnati Reds wants to determine the percentage of local college...
A public relations manager for the Cincinnati Reds wants to determine the percentage of local college students who attended a Reds baseball game at Great American Ballpark during the 2016 season. A sample of 648 students who are enrolled at a college or university within 25 miles of the Reds ballpark was asked whether or not they attended at least one Cincinnati Reds game during the 2016 season. Out of the 648 students asked, 246 had attended a game during...
The manager of a paint supply store wants to estimate the actual amount of paint contained...
The manager of a paint supply store wants to estimate the actual amount of paint contained in 1-galion cans purchased from a nationally known manufacturer. The manufacturer's specifications state that the standard deviation of the amount of paint is equal to 0.01 gallon. A random sample of 50 cans is selected, and the sample mean amount of paint per 1-gallon can is 0.987 gallon. Complet parts (a) through (d). a Construct a 99% confidence interval estimate for the population mean...
Suppose that Randy is an analyst for the bicyling industry and wants to estimate the asking...
Suppose that Randy is an analyst for the bicyling industry and wants to estimate the asking price of used entry-level road hikes advertised online in the southeastern part of the United States. He obtains a random sample of 13 online advertisements of entry level road bikes. He determines that the mean price for these 13 hikes is =5681.87 and that the sample standard deviation is s = $177.45. He uses this information to construct a 99% confidence interval for p,...
ASAP HELP!!
A History professor at a local community college wants to estimate the percent of college students that cheat on online assessment. Out of 100 college students sampled, 39 had cheated. Based on this, construct a 99% confidence interval for the proportion p of college students that have cheated in his history class. Make sure to express your answers as decimals, to three places. Use the point estimate and margin of error to express the same answer. Give your...
uan wants to estimate the percentage of people who will vote for issue A on the next election. He surveys 150 Individuals and finds that 81 will vote for issue A. Find the margin of error for the confidence interval for the population proportion with a 90% confidence level. Z0.10 Z0.05 0.0251 z0.01 0.005 1.2821 1 :645| 1.960||2.326|2.576 Use the table of common z-scores above. Round the final answer to three decimal places
uan wants to estimate the percentage of...
The manager of a paint supply store wants to estimate the actual amount of paint contained in 1-galion cans purchased from a nationally known manufacturer. The manufacturer's specifications state that the standard deviation of the amount of paint is equal to 0.01 gallon. A random sample of 50 cans is selected, and the sample mean amount of paint per 1-gallon can is 0.987 gallon. Complet parts (a) through (d). a Construct a 99% confidence interval estimate for the population mean...
Suppose that Randy is an analyst for the bicyling industry and wants to estimate the asking price of used entry-level road hikes advertised online in the southeastern part of the United States. He obtains a random sample of 13 online advertisements of entry level road bikes. He determines that the mean price for these 13 hikes is =5681.87 and that the sample standard deviation is s = $177.45. He uses this information to construct a 99% confidence interval for p,...
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