# statistics

posted by .

In 2006, the General Social Survey asked, "Do you see yourself as someone that tends to be lazy?" For this question, 20 people said that they definitely did out of 1513 randomly selected people. What is the 95% confidence interval for the proportion of all Americans that believe that believe that they tend to be lazy?

• statistics -

Use a confidence interval formula for proportions:

CI95 = p + or - (1.96)(√pq/n)
...where √ = square root, p = x/n, q = 1 - p, and n = sample size.

Note:
x = 20
n = 1513

Remember to convert all fractions to decimals before calculating the interval.

I hope this will help.

## Similar Questions

1. ### statistics

. A statistician needs to survey a sample of 50 people that is representative of voters in his community. He prepared a list of phone numbers of 50 randomly selected, expected voters. Next morning, he came to work at 8:00 and began …
2. ### staistics/ math

A statistician needs to survey a sample of 50 people that is representative of voters in his community. He prepared a list of phone numbers of 50 randomly selected, expected voters. Next morning, he came to work at 8:00 and began to …
3. ### statistics

the organizer of a television show must select 5 people to partipate in the show. the participants will be selected from a list of 30 people who have written in to the show. if the participants are selected randomly, what is the probability …
4. ### stats

A statistician needs to survey a sample of 50 people that is representative of voters in his community. He prepared a list of phone numbers of 50 randomly selected, expected voters. Next morning, he came to work at 8:00 and began to …
5. ### statistics

570 people were in a survey and 124 people said yes. What proportion of people said yes to 1 d.p
6. ### statistics

according to data from the american medical association, 10% of us are left handed. If three people, are randomly selected find the probability that they are all left handed. If groups of 50 people are randomly selected, what is the …
7. ### Statistics

Of 500 randomly selected people in new york city, 210 people had O+ blood. "58 percent of the people in NYC do not have type O+ blood" Is the statement descriptive statistics or inferential statistics?
8. ### statistics

Survey on concern for criminal in a survey 3 of 4 students said the court show too much concern for criminals find the probability that 3 out of 7 randomly selected students will agree with this statement
9. ### Statistics

One survey by the American Medical Association showed that among 785 randomly selected people who completed four years of college, 81.7% do not smoke. Use a 0.01 significance level to test the claim that people who completed four years …
10. ### Statistics

One survey by the American Medical Association showed that among 785 randomly selected people who completed four years of college, 81.7% do not smoke. Use a 0.01 significance level to test the claim that people who completed four years …

More Similar Questions