Project #25646 - Stats HW

I need this HW done ASAP! If not able to be completed by 11:59 mountain time, I will not get credit and do not want help. 

 
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According to a spring 2009 poll of more than 2,200 college students across 40 colleges and universities, 76 percent of students reported feeling stressed on a daily basis. Assume that the true proportion of students who feel stressed on a daily basis is 76%. 

(a) Between which two z scores does EXACTLY the central 97% of the normal distribution fall? i.e. Pr(-z^* < Z < z^*) = 0.9700

Lower:  Upper:  

(b) Suppose you take a sample survey of 89 college students. Between what two values will the sample proportion of stressed students be 97% of the time? [Hint: You should use your answers from (a) in your calculations.] 

Lower:  Upper: 
 
 

Subject Mathematics
Due By (Pacific Time) 03/21/2014 011:45 pm
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