# A normal population has a mean of 20 and a standard deviation of 4, business and finance homework help- COURSE FIGHTER | coursefighter.com

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A normal population has a mean of 20 and a standard deviation of 4, business and finance homework help- COURSE FIGHTER | coursefighter.com

A normal population has a mean of 20 and a standard deviation of 4. |

a. |
Compute the z value associated with 25. (Round your answer to 2 decimal places.) |

Z |

b. |
What proportion of the population is between 20 and 25? |

Proportion |

c. |
What proportion of the population is less than 18? |

Proportion |

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