Look at part 1. What is probability?
Probability is a measure of the likelihood of an event.
Which location on the number line represents an event that is equally likely to occur or not occur? How do you know?
Location C. Probabilities of
What does a probability of 1 represent?
It represents that the event is definitely going to occur (certain).
What does a probability of zero represent?
It is impossible for the event to occur.
Which location on the number line represents an event that is unlikely to occur? How do you know?
Location B. Events with probabilities closer to zero are unlikely.
Which location on the number line represents an event that is likely to occur? How do you know?
Location D. Events with probabilities closer to 1 are likely.
Look at part 2, question A. How do you calculate the relative frequency of an event, in general?
Divide the number of times the event was observed to occur by the total number of observations (trials).
What is the relative frequency of 51 degrees Fahrenheit through 55 degrees Fahrenheit? Round your answer to the nearest hundredth.
0.14
What is the relative frequency of temperatures over 65 degrees Fahrenheit? Round your answer to the nearest hundredth.
0.07
Which temperature has the greatest relative frequency? How do you know?
50°F or less. Possible explanation: This temperature range occurred most frequently. So, it will have the greatest relative frequency.
How can Celia answer question D?
Possible response: Celia can find the relative frequency of 61°F through 65°F. Then she can multiply it by 10 days.
What is your answer for question D? Round your answer to the nearest hundredth.
2.14 days.
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