probability that the class will earn a pizza on the fifth

[Guest]

A teacher provides pizza for his class if they earn an A-average on any test. The probability of the class getting an A-average on one of his tests is 8%.
What is the probability that the class will earn a pizza on the fifth test?

so prob= 0.08 but what type of question is this? How would you do this

 

[galactus]

This appears to be a geometric distribution.

\(\displaystyle (0.08)(0.92)^{5}\)

 

[pka]

Re: probability that the class will earn a pizza on the fift

A teacher provides pizza for his class if they earn an A-average on any test. The probability of the class getting an A-average on one of his tests is 8%.
What is the probability that the class will earn a pizza on the fifth test?

This is just extremely poor question!
Having said that, if we assume that the test takings are independent (which in reality they cannot be) then the probability is constant, 0.08. That is, it is 0.08 on the first as well as any other test. The way the question is written there is no other way to read it.