Stemplots. In Exercises construct the stemplot.

Car Braking Distances Refer to Data Set 14 in Appendix B and use the 21 braking distances (ft). Are there any outliers? Is there strong evidence suggesting that the data are not from a population having a normal distribution?

Answer :

Step 1 of 2 :

Given, the 21 braking distances from car braking distances.

BRK |

133 |

136 |

126 |

137 |

138 |

132 |

135 |

136 |

136 |

128 |

140 |

140 |

135 |

137 |

139 |

134 |

145 |

143 |

131 |

140 |

143 |

The claim is to construct the Steam plot and check whether the data are not from a population having a normal distribution.