Finding a Minumum N from Binomial Distribution

[Youngster]

Homework Statement

From the text: Use Hershey's Kisses to estimate the probability that when dropped, they land with the flat part lying on the floor. How many trials are necessary to get a result that appears to be reasonably accurate when rounded to the first decimal place?

Homework Equations

The Attempt at a Solution

Well assuming that I already obtained some ration through a numerous amount of trials ( by the Law of Large Numbers), how would I use that value to obtain a minimum N amount of trails necessary to get a reasonably accurate result?

I know that the Binomial Probability Formula is:

P(x) = [itex]\frac{n!}{(n-x)!x!}[/itex] [itex]\bullet[/itex] p^x [itex]\bullet[/itex] q^n-x

How would one isolate n in that formula though? Or should I approach this a different way?

 

[HallsofIvy]

The wording of this problem implies that they expect you to actually do this experiment, using Hershey Kisses, then use the data from your experiment.

 

[Ray Vickson]

The wording of this problem implies that they expect you to actually do this experiment, using Hershey Kisses, then use the data from your experiment.

You will also need to decide what is meant by "appears to be" and "reasonably accurate". (These would be issues on which people can honestly disagree!)

RGV