A museum employee surveys a random sample of 450 visitors to the museum. Of those visitors, 276 stopped at the gift shop. Based on these results, about how many people out of 2,500 visitors to the
museum would be expected to stop at the gift shop?

Aparallel system functions whenever at least one of its components works. consider a parallel system of n components, and suppose each component works independently with probability 0.5. find the conditional probability that component n works given that the system is working

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

The random variable x represents the number of phone calls an author receives in a day, and it has a poisson distribution with a mean of 8.7 calls. what are the possible values of x