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
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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):
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
