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+0  
 
+1
319
3
avatar+1016 

help me please.

 May 24, 2018
 #1
avatar+232 
0

A)84.1%

B)97.5%

C)2.5%

 May 24, 2018
 #2
avatar+232 
0

Hope this helps!

 May 24, 2018
 #3
avatar+102383 
+1

(a)

Find the z score

[ 20555 - 20500 ] / 55  =  .1

 

This z score  equates to  .8413  =  84.13% of the days

 

(b)

Find the z  score

[20610 - 20500] / 55 =  2

 

This score equates to .9772.....so the % days that the factory  produced  20610 or more skateboards  =

1 - .9772 = .0228  =  2.28%  of the days

 

(c)

Find the z score

[20445 - 20500 ]  / 55  = -1

 

This z score equates to .1587 = 15.87%  of the days

 

 

cool cool cool

 May 24, 2018

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