Normal Distributions. Answer the given questions which are related to normal distributions.

Identifying the Distribution Does the frequency distribution given in Exercise appear to have a normal distribution? Explain.

Exercise

identify the class width, class midpoints, and class boundaries for the given frequency distribution. The frequency distributions are based on real data from Appendix B.

Problem 12BSC

Answer:

Step1 of 3:

We have,

CI | frequency |

50-59 | 4 |

60-69 | 10 |

70-79 | 25 |

80-89 | 43 |

90-99 | 26 |

100-109 | 8 |

110-119 | 3 |

120-129 | 2 |

Step2 of 3:

We need to check the frequency distribution given in Exercise appear to have a normal distribution? Explain.

Step3 of 3:

A frequency histogram is obtained by using Excel and steps are as follows

Enter the given data in Excel sheet

select...