Some street foods were sampled and tested for the presence of disease-causing bacteria or harmful chemicals. A random sample of 200 street foods of various types according to how they are prepared was examined. The table shows the results. 1. What is the probability that a street food selected at random is fried? 2. What is the probability that a street food selected at random is both grilled and contains harmful chemicals? 3. What is the probability that a street food selected at random has both bacteria and harmful chemicals?

Some street foods were sampled and tested for the presence of disease-causing bacteria or harmful chemicals. A random sample of 200 street foods of various types according to how they are prepared was examined. The table shows the results. 1. What is the probability that a street food selected at random is fried? 2. What is the probability that a street food selected at random is both grilled and contains harmful chemicals? 3. What is the probability that a street food selected at random has both bacteria and harmful chemicals?

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Concept explainers

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

Question

1. What is the probability that a street food selected at random is fried?

2. What is the probability that a street food selected at random is both grilled and contains harmful chemicals?

3. What is the probability that a street food selected at random has both bacteria and harmful chemicals?

Number of Food
Number of Food Number of Food
with Both
Total
Туре of Food
with Bacteria
with Harmful
Bacteria and
Only
Chemicals Only
Harmful
Chemicals
Fried
35
15
18
68
Boiled
46
14
32
92
Grilled
24
8
8
40
Total
105
37
58
200

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