Statistic HW: Probability ?

In a certain area, 37% of people own a dog. Complete parts a and b below.

a. Find the probability that exactly 7 out of 15 own a dog.

b. In a random sample of 15 people from this area, find the probability that 7 or fewer own a dog.

Please show work.

If someone can help me with these, I'd appreciate it!

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