SOLUTION: Thirty percent of students at a certain university are known to be short-sighted. If twenty five students from that university are randomly selected, what are the chances that at m

Question 1185797: Thirty percent of students at a certain university are known to be short-sighted. If twenty five students from that university are randomly selected, what are the chances that at most two of them are short-sighted?
a. 0.00896
b. 0.00883
c. 0.00013
d. 0.00158
Answer by Edwin McCravy(20060) (Show Source): You can put this solution on YOUR website!


On your TI-84 calculator,

Press ON CLEAR 
Press 2ND VARS  
Use down arrow key to scroll down to to B:binomcdf
Press ENTER

Make the next screen read:

     binomcdf
 trials:25
p:0.30
x value:2
Paste     <--use down arrow to highlight Paste

Press ENTER

See this:

binomcdf(25,0.30,2)

Press ENTER.

You will see the answer.


Edwin

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