Question

In: Math

In a survey of the United States adults with the sample size of 2037, 339 said...

In a survey of the United States adults with the sample size of 2037, 339 said Franklin Roosevelt was the best president since World War II. To United States adults are selected at random from the population of all United States adults without replacement. Assuming the sample is representative of all United States adults complete parts A through D.

A) Find the probability that both adults say Franklin Roosevelt was the best president since World War II.

The probability that both adults say Franklin Roosevelt was the best president since World War II is.. (round to three decimal places as needed)

B) find the probability that neither adult say Franklin Roosevelt was the best president since World War II.

The probability that neither don't say Franklin Roosevelt was the best president since World War II is...

C) find the probability that at least one of the two adults say Franklin Roosevelt was the best president since World War II.

The probability at least one of the two adult says Franklin Roosevelt was the best president since World War II is...

D) which of the events can be considered unusual? Explain.

- The event in part C is unusual because it's probability is less than or equal to 0.05

- The event in part B is unusual because it's probably is less than or equal to 0.05

Solutions

Expert Solution

Solution:

We are given:

Out of 2037 adults, 339 told that Franklin Roosevelt was the best president since World War II.

A) Find the probability that both adults say Franklin Roosevelt was the best president since World War II.

Answer: The probability that both adults say Franklin Roosevelt was the best president since World War II is

B) find the probability that neither adult says Franklin Roosevelt was the best president since World War II.

Answer: There are total 2037 - 339 = 1698 adults who said Franklin Roosevelt was not the best president since World War II

The probability that neither don't say Franklin Roosevelt was the best president since World War II is

C) find the probability that at least one of the two adults say Franklin Roosevelt was the best president since World War II.

Answer: The probability at least one of the two adult says Franklin Roosevelt was the best president since World War II is

D) which of the events can be considered unusual? Explain.

Answer: The event in part A is unusual because it's probability is less than or equal to 0.05

milcah answered 5 hours ago
Next > < Previous

Related Solutions

In a survey of 1470 adults from the United States, 221 said that of all the...
In a survey of 1470 adults from the United States, 221 said that of all the presidents in our nations history, they most admired Abraham Lincoln. Use the information above to answer the following. 1) Identify x: 2) Identify n: 3) Identify pˆp^ 4) Identify qˆq^ Construct a 90% confidence interval for the proportion of adults who say that of all the presidents in our nation's history , they most admire Abraham Lincoln. 5) Identify the zα/2zα/2 6) Identify the...
In a survey of U.S. adults with a sample size of 2040​, 315 said Franklin Roosevelt...
In a survey of U.S. adults with a sample size of 2040​, 315 said Franklin Roosevelt was the best president since World War II. Two U.S. adults are selected at random from the population of all U.S. adults without replacement. Assuming the sample is representative of all U.S.​ adults, complete parts​ (a) through​ (d). (a) Find the probability that both adults say Franklin Roosevelt was the best president since World War II. The probability that both adults say Franklin Roosevelt...
1. In a survey of U.S. adults with a sample size of 2004, 345 said Franklin...
1. In a survey of U.S. adults with a sample size of 2004, 345 said Franklin Roosevelt was the best president since World War II. TwoTwo U.S. Two adults are selected at random from this sample without replacement. Complete parts​ (a) through​ (d). ​(a) Find the probability that both adults say Franklin Roosevelt was the best president since World War II. ​(b) Find the probability that neither adult says Franklin Roosevelt was the best president since World War II. ​(c)...
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)...
In a survey of 1000 randomly selected adults in the United States, participants were asked what...
In a survey of 1000 randomly selected adults in the United States, participants were asked what their most favorite and what their least favorite subject was when they were in school (Associated Press, August 17, 2005). In what might seem like a contradiction, math was chosen more often than any other subject in both categories! Math was chosen by 228 of the 1000 as the favorite subject, and it was also chosen by 366 of the 1000 as the least...
In a survey of 1000 randomly selected adults in the United States, participants were asked what...
In a survey of 1000 randomly selected adults in the United States, participants were asked what their most favorite and what their least favorite subject was when they were in school (Associated Press, August 17, 2005). In what might seem like a contradiction, math was chosen more often than any other subject in both categories! Math was chosen by 222 of the 1000 as the favorite subject, and it was also chosen by 362 of the 1000 as the least...
A sample of n = 1,033 adults in the United States was asked, "Do you think...
A sample of n = 1,033 adults in the United States was asked, "Do you think the police should or should not be allowed to collect DNA information from suspected criminals, similar to how they take fingerprints?" Of those sampled, 68% answered "should". (Round your answers to the nearest tenth.) (a) Calculate the conservative margin of error for the survey, as a percentage. (b) Compute an approximate 95% confidence interval for the percentage of all American adults who think police...
A poll conducted in 2012 asked a random sample of 1358 adults in the United States...
A poll conducted in 2012 asked a random sample of 1358 adults in the United States how much confidence they had in banks and other financial institutions. A total of 149 adults said that they had a great deal of confidence. An economist claims that less than 13% of U.S. adults have a great deal of confidence in banks. Can you conclude that the economist's claim is true? Use both α=0.10 and α=0.01 levels of significance and the P-value method...
The Pew Research Center took a random sample of 2928 adults in the United States in...
The Pew Research Center took a random sample of 2928 adults in the United States in September 2008. In this sample, 53% of 2928 people believed that reducing the spread of acquired immune sample deficiency disease (AIDS) and other infectious diseases was an important policy goal for the U.S. government. If the significance level α=0.05, should we reject or fail to reject the null hypothesis? How would you interpret your results of hypothesis testing?        REJECT HO      DO NOT REJECT HO...
In the United States, 75 percent of adults wear glasses or contact lenses. A random sample...
In the United States, 75 percent of adults wear glasses or contact lenses. A random sample of 10 adults in the United States will be selected. Which of the following is closest to the probability that fewer than 8 of the selected adults wear glasses or contact lenses?
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT