We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. cookie policy and privacy policy.
 
+0  
 
0
184
1
avatar+45 

The results of a survey show that the percent of adults in a certain town who want to change the name of the town is in the interval (0.31, 0.52) 

 

(a) What is the point estimate for the percent who want to change the town’s name?

 

(b) What is the poll’s margin of error?

 

(c) If the town’s adult population is 140,371, what is the best estimate for the number of people who would support the name change?

 May 14, 2019

Best Answer 

 #1
avatar+115 
+2

(a) I want the midpoint value of the interval for the point estimate, so \(\frac{0.31+0.52}{2} = 0.415\)

 

(b) The poll's margin of error can be described as how far either end of the interval is from the point estimate, so \(|0.52-0.415| = 0.105\)

 

(c) estimate \(= \hat{p} * n = 0.415(140371) = 58253.965\)

.
 May 14, 2019
 #1
avatar+115 
+2
Best Answer

(a) I want the midpoint value of the interval for the point estimate, so \(\frac{0.31+0.52}{2} = 0.415\)

 

(b) The poll's margin of error can be described as how far either end of the interval is from the point estimate, so \(|0.52-0.415| = 0.105\)

 

(c) estimate \(= \hat{p} * n = 0.415(140371) = 58253.965\)

Anthrax May 14, 2019

8 Online Users