8. Probability & Statistics

To prepare for the week ahead, a restaurant keeps a record of the number of each main meal ordered throughout the previous week.

Meal | Frequency |
---|---|

Chicken | $54$54 |

Beef | $32$32 |

Lamb | $26$26 |

Vegetarian | $45$45 |

a

How many meals were ordered altogether?

b

What is the experimental probability that a customer will order a beef meal?

Give your answer as a percentage, rounded to the nearest whole percent.

Easy

Approx 3 minutes

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Approximate the probability of a chance event by collecting data on the chance process that produces it and observing its long-run relative frequency, and predict the approximate relative frequency given the probability.