Among a simple random sample of 322 American adults who do not have a four-year college...

Among a simple random sample of 322 American adults who do not have a four-year college degree and are not currently enrolled in school, 145 said they decided not to go to college because they could not afford school.

1. Calculate a 99% confidence interval for the proportion of Americans who decide to not go to college because they cannot afford it, and interpret the interval in context. Round to 4 decimal places.

( , )

2. Suppose we wanted the margin of error for the 99% confidence level to be about 3.25%. What is the smallest sample size we could take to achieve this? Note: For consistency's sake, round your z* value to 3 decimal places before calculating the necessary sample size.

Choose n =

Expert Solution

milcah answered 7 months ago

Among a simple random sample of 331 American adults who do not have a four-year college...

Among a simple random sample of 331 American adults who do not have a four-year college degree and are not currently enrolled in school, 48% said they decided not to go to college because they could not afford school. (a) A newspaper article states that only a minority of the Americans who decide not to go to college do so because they cannot afford it and uses the point estimate from this survey as evidence. Conduct a hypothesis test to...

Is college worth it? Among a simple random sample of 324 American adults who do not...

Is college worth it? Among a simple random sample of 324 American adults who do not have a four-year college degree and are not currently enrolled in school, 143 said they decided not to go to college because they could not afford school. 1. Calculate a 90% confidence interval for the proportion of Americans who decide to not go to college because they cannot afford it, and interpret the interval in context. Round to 4 decimal places. ( , ) 2....

Is college worth it? Among a simple random sample of 300 American adults who do not...

Is college worth it? Among a simple random sample of 300 American adults who do not have a four-year college degree and are not currently enrolled in school, 147 said they decided not to go to college because they could not afford school. 1. Calculate a 99% confidence interval for the proportion of Americans who decide to not go to college because they cannot afford it, and interpret the interval in context. Round to 4 decimal places. 2. Suppose we...

Is college worth it? Among a simple random sample of 331 American adults who do not...

Is college worth it? Among a simple random sample of 331 American adults who do not have a four-year college degree and are not currently enrolled in school, 131 said they decided not to go to college because they could not afford school. NOTE: While performing the calculations, do not used rounded values. For instance, when calculating a p-value from a test statistic, do not use a rounded value of the test statistic to calculate the p-value. Preserve all the...

Is college worth it? Among a simple random sample of 348 American adults who do not...

Is college worth it? Among a simple random sample of 348 American adults who do not have a four-year college degree and are not currently enrolled in school, 157 said they decided not to go to college because they could not afford school. 1. Calculate a 90% confidence interval for the proportion of Americans who decide to not go to college because they cannot afford it, and interpret the interval in context. Round to 4 decimal places. ( , ) 2....

Is college worth it? Among a simple random sample of 344 American adults who do not...

Is college worth it? Among a simple random sample of 344 American adults who do not have a four-year college degree and are not currently enrolled in school, 155 said they decided not to go to college because they could not afford school. 1. Calculate a 90% confidence interval for the proportion of Americans who decide to not go to college because they cannot afford it, and interpret the interval in context. Round to 4 decimal places. ( 0.4383 ,...

Is college worth it? Part I: Among a simple random sample of 331 American adults who...

Is college worth it? Part I: Among a simple random sample of 331 American adults who do not have a four-year college degree and are not currently enrolled in school, 48% said they decided not to go to college because they could not afford school. (a) A newspaper article states that only a minority of the Americans who decide not to go to college do so because they cannot afford it and uses the point estimate from this survey as...

In a random sample of 765 adults in the United States, 322 say they could not...

In a random sample of 765 adults in the United States, 322 say they could not cover a $400 unexpected expense without borrowing money or going into debt. A.)Find the mean and the standard deviation of p-hat for this sample B.) Given the sample data in problem (1) above, construct a confidence interval at the 95% confidence level for the true proportion of Americans who could not cover a $400 unexpected expense without borrowing money or going into debt. C.)4)...

A national survey conducted among a simple random sample of 1513 adults shows that 835 of...

A national survey conducted among a simple random sample of 1513 adults shows that 835 of Americans think the Civil War is still relevant to American politics and the political life. Conduct a hypothesis test to determine if these data provide strong evidence that the majority of the Americans think the Civil War is still relevant. Give answers to at least 4 decimal places. A)Identify the claim B)What are the correct hypotheses? (Select the correct symbols and use decimal values...

2 The Civil War. A national survey conducted among a simple random sample of 1,507 adults...

2 The Civil War. A national survey conducted among a simple random sample of 1,507 adults shows that 56% of Americans think the Civil War is still relevant to American politics and political life. (a) Conduct a hypothesis test to determine if these data provide strong evidence that the majority of the Americans think the Civil War is still relevant. (b) Interpret the p-value in this context. (c) Calculate a 90% confidence interval for the proportion of Americans who think...

Question