The state education commission wants to estimate the fraction of tenth grade students that have reading skills at or below the eighth grade level. In an earlier study, the population proportion was estimated to be 0.190.19. How large a sample would be required in order to estimate the fraction of tenth graders reading at or below the eighth grade level at the 98%98% confidence level with an error of at most 0.020.02? Round your answer up to the next integer.

An economist needs to estimate the proportion of residents of Sebastian that have earned a college degree. Determine the most conservative estimate of the sample size required to limit the margin of error to within 0.025 of the population proportion for a 96% confidence interval.Round the solution up to the nearest whole number.n=

A magazine provided results from a poll of 1500 adults who were asked to identify their favorite pie. Among the 1500 respondents, 13% chose chocolate pie, and the margin of error was given as +3 percentage points. What values do p, q, n, E, and p represent? If the confidence level is 95%, what is the value of a? The value of p is The value of a is The value of n is The value of E is The value of p is

The state education commission wants to estimate the fraction of tenth grade students that have reading skills at or below the eighth grade level. Suppose a sample of 1265 tenth graders is drawn. Of the students sampled, 1012 read above the eighth grade level. Using the data, construct the 99% confidence interval for the population proportion of tenth graders reading at or below the eighth grade level. Round your answers to three decimal places.

In a recent poll, 350 people were asked if they liked dogs, and 41% said they did. Find the Margin of Error for this poll, at the 95% confidence level. Give your answer to four decimal places if possible.

Which store do you think is more expensive—physical or online? A recent survey found that 45% of people aged 20 to 40 thought that physical stores were more expensive. To conduct a follow-up study that would provide 95% confidence that the point estimate is correct to within 0.05 of the population proportion, how many people aged 20 to 40 need to be sampled? (PHStat) To conduct a follow-up study that would provide 99% confidence that the point estimate is correct to within 0.05 of the population proportion, how many people aged 20 to 40 need to be sampled? (PHStat) Compare the results of (a) and (b).

If 390 people were asked if they liked dogs, and 82% said they did What is the margin of error of this poll, at the 95% confidence level with your answer to three decimals?

Researchers studied the mean egg length (in millimeters) for a bird population. After taking a random sample of eggs, they obtained a 95% confidence interval of (45,60). What is the value of the margin of error? Choose the correct answer below. A. 15 mm B. 52.5 mm O c. 7.5 mm O D. 1.96