**Question: ** The sales records of a real estate agency show the following sales over the past 200 days:

Number of Houses Sold | Number of Days |

0 | 60 |

1 | 80 |

2 | 40 |

3 | 16 |

4 | 4 |

a. Assign probabilities to the sample points and show their values.

b. What is the probability the agency will sell one house in a given day?

c. What is the probability the agency will sell fewer than three houses in a given day?

d. What is the expected number of houses sold on any given day?