Question 1209507
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If your teacher lets you use a spreadsheet, then you can quickly find the answer using the <a href="https://support.microsoft.com/en-us/office/binomdist-function-506a663e-c4ca-428d-b9a8-05583d68789c">BinomDist</a> function.


The template is
<font color=red>=BinomDist(x,n,p,c)</font>
x = number of successes
n = number of trials
p = probability of success
c = cumulative flag


In this case x = 3, n = 10, p = 1/4 = 0.25
c = 1 indicates that we're adding binomial probability values from x = 0 to x = 3


Therefore the full command to type in would be:
<font color=red>=BinomDist(3,10,0.25,1)</font>
This leads to this approximate value 0.775875
which rounds to the final answer <font color=red>0.776</font>


Side note: Don't forget the equal sign up front of the BinomDist command.
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