Answer to Question #323499 in Statistics and Probability for ara

Question

Problem: 

       Mr. Domingo conducted a survey among ten random samples of people who are in favor of Truck Ban in a section in the City. He determined the percentages of those who are in favor of the ban. Assuming that the only error present is the sampling error, he wanted to determine the point estimate of the population mean percentage and the standard deviation based on 500 observations. The following numbers represent the percentages of the 10 surveys.

47.0 56.4 50.1 60.2 48.0 55.3 60.0 59.5 63.0 57.5

1. Find the sum of the values in the numerator and n-1.s2=∑(X−x)2n−1

s2=(47.0−)2+(56.4−)2+...+(57.5−)210−1

s2=

__________

This value is called the _______________________

 

2. Extract the square root of s²  s= _____________

This value is called the ______________________.

3. Describe/Interpret the result.On the average, the sample mean percentage is __________ away from the mean of the percentage value of people favoring the truck ban.