I need help with question 5 and 6 using the information provided in 1-4

timer Asked: Nov 28th, 2015

Question description

1)  Determine
a question that you would like to use to survey a population. Keep the
situation binomial and make sure the question has a yes or no answer.

Question:  Is your favorite sport

2) What population are you going to study?   High School male 
3) Explain how will you choose a representative sample? 

Controls were placed on the types of respondents (High School male)  
chosen for the survey in terms of quotas and we 
specifically looked for a specific group of people to  
interview to make sure the sample is correctly 

 4) Administer your survey question to the sample
that you described in part 3 and record your results.

a) How many were in your sample? n = 40 
b) How may responded “yes”?   x = 31 
c) What is your sample proportion? = .78 

Calculate and interpret a CI90 based on your sample data. What is
your error?

 b) Calculate and interpret a CI99 based on your sample data. What is
your error?

 c) Explain why the confidence intervals are different in a and b above.

a) If you wanted a CI90 with an error of 5% how many people would
you have needed to survey?

b) If you wanted a CI99 with an error of 5% how many people would
you have needed to   survey?

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