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Chapter 12: Q17. (page 797)
What is the theoretical probability of tossing heads when a coin is tossed?
The theoretical probability of tossing head is .
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The results of a simulation of coin flipping are shown.
Outcome | Frequency |
heads | 25 |
tails | 75 |
What is the theoretical probability of heads?
To determine whether voters support a new trade agreement, 5 people from the list of registered voters in each state and in the District of Columbia are selected at random. Is the sample biased or unbiased?
Identify each sample as biased or unbiased. Explain your reasoning.
A shoe company conducts an observation study that involves 10 girls and 2 boys to see which shoes are the most popular.
Identify each sample, and suggest a population from which it was selected. Then classify the sample as simple, stratified, or systematic. Explain your reasoning.
At a popular hamburger restaurant, the manager checks the quality of the burgers every 20 minutes, starting at a randomly selected time.
Find the mean, variance, and standard deviation to the nearest tenth for each set of data.
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