Problem 9CQQ

In Exercises, use the following: Five U.S. domestic flights are randomly selected, and the table in the margin lists the probabilities for the number that arrive on time (based on data from the Department of Transportation). Assume that five flights are randomly selected.

Is 0 an unusually low number of flights arriving on time?

x |
P(x) |

0 |
0+ |

1 |
0.006 |

2 |
0.048 |

3 |
0.198 |

4 |
0.409 |

5 |
0.338 |

Answer:

Step 1:

Given that, Five U.S. domestic flights are randomly selected, and the table in the margin lists the probabilities for the number that arrive on time.

x |
p(x) |

0 |
0+ |

1 |
0.006 |

2 |
0.048 |

3 |
0.198 |

4 |
0.409 |

5 |
0.338 |

Yes, because the probability 0+ is very close to 0.