I think there might be something wrong with the test suite. When I run in Matlab, my answers match what the test suite is looking for, yet it still shows a failure.
Ben, your description suggests that rounding to 4 decimal places is optional. Perhaps you can clarify that. Test case with x = 365 is weird. The probability that no one shares a birthday for that x is close to 1.4550e-157 which is neglected during the rounding and hence highly probable event becomes a certainty !!
@Gary What you might be seeing is that the default output from Matlab is only 5 digits (generally). So you're probably seeing something like 0.0027 for X = 2 but if you multiply that answer by 1000 you will see there are still some digits trailing after the 7.
@Venu I think that's just an issue with how I did the calculation on my end. You're right that I should have it as 0.9999 in the test suite even though that is super close to 1 (the actual probability). I'll also make it clear in the brief that the answer should be out to 4 decimal points.
The problem should state truncate at the 10 thousandth point. n=50 is .97037 so the correct rounded answer is .9704 not .9703.
Instruction is to round, but correct answers are truncated (.9703 vs .9704)
I've used the function floor instead of round, because of the issue mentioned above and it worked.
It's very much possible that the target solution is wrongly rounded
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