Report the confidence interval for the population percentage

Assignment Help Basic Statistics

Reference no: EM131793083

Friendly Neighbors

A September 2015 Pew Research Center survey showed that 71% of the randomly selected people living in Asia-Pacific view Japan as a favorable neighbor. (This was up from 68% in October 2014.)

Suppose the margin of error was 2 percentage points with a 95% confidence interval. Assume that the conditions hold for all parts.

a. Report the confidence interval for the population percentage that held Japan as a favorable neighbor in 2015 using a carefully worded sentence.

b. If the sample size were larger and sample proportions stayed the same, would the interval be wider or narrower than the one obtained in part a.

c. If the confidence level were 99% and nothing else changed, would the interval be narrower or wider than the one obtained in part a.

d. The total population of adults in Asia-Pacific is 36.84 billion. Suppose the population had been one-third of that. Would that have changed any of your answers?

Reference no: EM131793083

Questions Cloud

Find the percentages that graduated for both groups : Which of the conditions fail so that we cannot use a confidence interval for the difference between proportions?

Write about why we study history : The second objective, in the same document you will write about Why we study history. Peter Stearns has a great article on this which will help you get started.

Calculate the putin companys ratios : Selected data for Putin Company for 2014 and additional information on industry averages follow

Would the interval be wider or narrower than the one : Report the confidence interval for the population percentage that opposed banning super-size sugary soft drinks in 2012, using a carefully worded sentence.

Report the confidence interval for the population percentage : Report the confidence interval for the population percentage that held Japan as a favorable neighbor in 2015 using a carefully worded sentence.

What were the major security concerns for the united states : What were the major security concerns for the US? What strategies did the US government believe would best protect the country's values and national security?

Find the sample proportion that supported : A poll on a proposition showed that we are 95% confident that the population proportion of voters supporting it is between 40% and 48%.

Find the sample proportion that supported the proposition : A poll on a proposition showed that we are 99% confident that the population proportion of voters supporting it is between 52% and 62%.

Determine the cost assigned to ending inventory : Genesis Gifts reported the following current-year data for its only product. Determine the cost assigned to ending inventory

User Account

All Pages