Answer:
0.2322   or    23.22 %
Step-by-step explanation:
We have to solve and find the area out of these limits
 μ + 0,3 =  210 + 0,3   ⇒    210,3  and
 μ - 0,3  =  210 - 0,3   ⇒    209.7
z(l)   = ( x - 210 ) / (2.8/√84)   ⇒  z(l) =  - (0.3 * 9,17)/ 2.8
z (l)  = - 1.195  
We need to interpole from z table
                1.19         ⇒     0.1170
               1.20       ⇒      0.1151
    Δ  ⇒     0.01     ⇒      0.0019
And between our point   1,195 and 1,19   the difference is  0.005
then        0.01          ⇒   0.0019
               0.005      ⇒      ?? (x)
we find x =  0.00095
to get the area for poin  z (l)  - 1.195 up to final left tail is from  z table
0,1170 - 0.00095 =  0.1161
And by symmetry  to the right is the same
So   0.1161 * 2   =  0.2322
We find the area out of the above indicated limits  the area we were looking for. This is the probability of finding shafts over and below the population mean and 0.3 inches
Step-by-step explanation:
 
        
             
        
        
        
Answer:
first one : (7+12+3+4+4+8)*2=76
 
        
             
        
        
        
Answer: w = -3u/2  +  2
Step-by-step explanation:
-12u + 13 = 8w - 3
-12u + 13 + 3 = 8w -3 + 3
-12u + 16 = 8w
w = -3u/2   +   2
 
        
             
        
        
        
The answer is very simple each had planted 37 flowers
        
             
        
        
        
Answer:
 x-intercept: 0,-1 . y-intercept: -1.5,0
Step-by-step explanation:
When given a point-slope equation y-y=m(x-x), the second x and y values mark a point in the line and the m value is the slope (rise over run). Just graph the line from there (in this case the slope would be 2 down and 3 to the right).