Solution to point c)

Present Case

Considering that P1=95% (the probability to go in stock out in one cycle) and that Qi and D are known it is straighforward:

Component Type | number of Stock Out/year |

1 | 6 |

2 | 4.24 |

3 | 5.37 |

Considering that for each type there are 27 different component the ETSOPY=421.45

Future Case

Similarly ETSOPY= 140.48 (1/3 respect Present Case).