# stats

posted by .

Violence in School, I An SRS of 400 American adults is asked “What do you think is the most serious problem facing our schools?” Suppose that in fact 40% of all adults would answer “violence” if asked this question. The proportion p of the sample who answers “violence” will vary in repeated sampling. In fact, we can assign probabilities to values of p using the normal density curve with mean 0.4 and standard deviation 0.023. Use the density curve to find the probabilities of the following event:

a.At least 45% of the sample believes that violence is the school’s most serious problem.

b.Less than 35% of the sample believes that violence is the most serious problem.

c.The sample proportion is between 0.35 and 0.45.

## Similar Questions

1. ### children/violence

Many children grow up with a considerble amount of violence in their lives protrayed in movies,video games,television,witnesing family violence,or being victims of child abuse themselves. Research on the effects of violence on children …
2. ### stats need help

Violence in School, I An SRS of 400 American adults is asked “What do you think is the most serious problem facing our schools?
3. ### stats need help

Violence in School, I An SRS of 400 American adults is asked “What do you think is the most serious problem facing our schools?
4. ### ap stats

Violence in School, I An SRS of 400 American adults is asked “What do you think is the most serious problem facing our schools?
5. ### ap statistics

an opinion poll asks a sample of 500 adults (an SRS) whether they favor giving parents of school age children vouchers that can be exchanged for education at any public or private school of their choice. Each school would be paid by …
6. ### ENGL

These three questions I am having difficulty in solving. Can you help me here. Question 1 - a) Whenever children in the United States turn on the tv, B) they are more likely to encounter violence on the screen. A is an independent …
7. ### Statistics

“How would you describe your own physical health at this time?
8. ### statistics

2. The National polling organization conducted a phone survey of 850 American adults on what they considered to be the most serious problem facing nation’s public schools; 30% said violence. This sample percent is an estimate of …
9. ### Statistics

One of the questions in the Pew Internet & American Life Project asked adults if they used the Internet, at least occasionally. The results showed that 454 out of 478 adults aged 18 - 29 answered yes; 741 out of 833 adults aged 30 …
10. ### law

Are parents and school management playing a suitable role to control increasing school violence?

More Similar Questions