SOLUTION: Fsu wants to make an inference about the percentage of students at the school who perfer having a break between the last day of school and the start of exams to help reduce stress.

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Question 221801: Fsu wants to make an inference about the percentage of students at the school who perfer having a break between the last day of school and the start of exams to help reduce stress. a survery is taken of 1000 students.
- it is known that the population proportion that favor a break between classes and final exams is 50%. let the random variable x be defined as the number of students that are in favor of a break between classes and final exams. state the distrubtion if x and compute the mean and variance of the distrubtion????
Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website!
The variable "x" is binomial.
mean = np = 1000*0.5 = 500
standard deviation = sqrt(npq) = sqrt(1000*1/2*1/2) = sqrt(250) = 5sqrt(10)
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Cheers,
Stan H.