Posted by Neid on Tuesday, April 29, 2014 at 8:19pm.
Mack rolls a 15sided cube 45 times, what would you predict the probability to be of Mack's rolling a number less than 5?

Math  Damon, Tuesday, April 29, 2014 at 8:29pm
The concept of a 15 sided cube startles me.
Did you make this question up yourself?

Math  Neid, Tuesday, April 29, 2014 at 8:38pm
No, it's a question on a 7th grade Skills Review

To Damon  Steve, Tuesday, April 29, 2014 at 8:39pm
You are right; there's no way a 15sided die could be fair. Even if the area of each face is the same, the angles cannot all be equal, since there is no regular 15hedron.

Math  Damon, Tuesday, April 29, 2014 at 8:52pm
Perhaps they want us to assume it is possible.
4 out of the 15 sides are less than 5
so
about 4/15 in each roll
so in each roll the probability of NOT getting less than 5 is 11/15
so the probability of NEVER getting less than 5 is (11/15)^45
so our answer is
1  (11/15)^45
which is about
1  8.7^7
which is so close to one that you can count on it :)
Answer This Question
Related Questions
 Algebra  Mack is 3 times as old as Justin. In 3 years, Mack's age will be 5 ...
 math !  1)You roll a 6sided number cube twice. Find P(3, then even). Write the...
 math  What is the probability of getting an even number when rolling a six...
 Math Please Help  What is the probability of getting an even number when ...
 Math  1. What is the probability of rolling a number less than or equal to 6 ...
 algebra  cube labeled 1 to 6 rolls 450 times. predict rolling less than 3
 MATH PLEASE HELP  A single, standard number cube is tossed. What is the ...
 Math 221 Week3  A probability experiment consists of rolling a 6 sided die. ...
 math  You roll a number cube twice. Find the probability of the event in ...
 Advanced algebra  In which distributions does the variable, X, have a binomial ...
More Related Questions