A survey was conducted among students from a university and the respondents were asked how many friends they have in a certain social networking site. A random sample of 20 students had the following answers: 143, 145, 97, 120, 143, 135, 100, 67, 45, 112, 108, 120, 154, 132, 86, 530, 450, 312, 190, 211 What is the mean number of friends of the sample? A) 176 157 185 170

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A survey was conducted among students from a university and the respondents were asked how many friends they have in a
certain social networking site. A random sample of 20 students had the following answers:
143, 145, 97, 120, 143, 135, 100, 67, 45, 112, 108, 120, 154, 132, 86, 530, 450, 312, 190, 211
What is the mean number of friends of the sample?
A) 176
B) 157
c) 185
D) 170
Transcribed Image Text:A survey was conducted among students from a university and the respondents were asked how many friends they have in a certain social networking site. A random sample of 20 students had the following answers: 143, 145, 97, 120, 143, 135, 100, 67, 45, 112, 108, 120, 154, 132, 86, 530, 450, 312, 190, 211 What is the mean number of friends of the sample? A) 176 B) 157 c) 185 D) 170
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