can you solve question reviewaspxmessageidm geqPUXExw5RGU 1

review.aspx?messageid-m geqPUXExw5RGU 13jjtRcvEA2&folderid-fisent;&attindex-0;&cp;=-1&attdepth; hat Did You Give DS Opportunity Cost to ..to uri i an * why college studen why Students Cheat D c Ass 2 Sec 204 1. A sample of MATH 117 Lab Work I results in Semester 352 was obtained. The data are as follows: 9.2 8.4 7.8 6.5 8.6 94 60 7.3A2.86.5 79 8.9

Solution

J)

Getting the mean, X,          
          
X = Sum(x) / n          
Sum(x) =    88.4      
As n =    13      
Thus,          
X =    6.8      
          
Setting up tables,          
x   x - X   (x - X)^2  
2.8   -4   16  
3.4   -3.4   11.56  
4.1   -2.7   7.29  
6   -0.8   0.64  
6.5   -0.3   0.09  
6.5   -0.3   0.09  
7.3   0.5   0.25  
7.8   1   1  
7.9   1.1   1.21  
8.6   1.8   3.24  
8.9   2.1   4.41  
9.2   2.4   5.76  
9.4   2.6   6.76  
          
          
Thus, Sum(x - X)^2 =    58.3      
          
Thus, as           
          
s^2 = Sum(x - X)^2 / (n - 1)          
          
As n =    13      
          
s^2 =    4.858333333   [answer, VARIANCE]

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k)  
          
Thus,          
          
s = sqrt(s^2) =    2.204162728   [ANSWER, STANDARD DEVIATION]