Problem 35E

Croissant Bakery, Inc., offers special decorated cakes for birthdays, weddings, and other occasions. It also has regular cakes available in its bakery. The following table gives the total number of cakes sold per day and the corresponding probability. Compute the mean, variance, and standard deviation of the number of cakes sold per day.

Number of Cakes Sold in a Day |
Probability |

12 |
.25 |

13 |
.40 |

14 |
.25 |

15 |
.10 |

Solution:

Step 1 of 2:

The given data is

Number of Cakes Sold in a Day |
Probability |

12 |
0.25 |

13 |
0.4 |

14 |
0.25 |

15 |
0.1 |

In this problem we have to find the mean, variance and standard deviation of the number of of cakes sold per day.