A recent report indicated a typical family of four spends $490 per month on food. Assume the distribution of food expenditures for a family of four follows the normal distribution, with a standard deviation of $90 per month. (Round your intermediate answers to 2 decimal places. Round your answers to 2 decimal places.) |

a. | What percent of the families spend more than $30 but less than $490 per month on food? |

Percent | % |

b. | What percent of the families spend less than $430 per month on food? |

Percent | % |

c. | What percent spend between $430 and $600 per month on food? |

Percent | % |

d. | What percent spend between $500 and $600 per month on food? |

Percent | % |

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a)50% b) 25.25%... View the full answer