Question

Asked Oct 26, 2019

- The probability distribution for the random variable x follows:

x |
f(x) |

20 |
0.20 |

25 |
0.15 |

30 |
0.25 |

35 |
0.40 |

- What is the probability that x is less than or equal to 25?
- What is the probability that x is greater than 30?

Please do not solve using Microsoft Excel. My professor does not teach using excel. I would like to see the equation and steps involved for my own reference to study for my exams.

Step 1

Given data

Step 2

**1)**

**probability that x is less than or equal to 25 is given by**

f(x=20) +f(x=25) = 0.20+0.15 = **0.35 (From Table)**

**2)**

**probability that x is greater than 30 ...**

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