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diamong
1 month ago
13

When Sophia runs the 400 meter dash, her finishing times are normally distributed with a mean of 75 seconds and a standard devia

tion of 1.1 second. What probability of races will her finishing time be between 74.2 and 76.4 seconds?
Mathematics
1 answer:
babunello [11.8K]1 month ago
3 0
I honestly don’t know the answer; I’m quite confused.
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Jessica is asked to write a quadratic equation to represent a function that goes through the point (8, –11) and has a vertex at
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There are seven boys and five girls in a class. The teacher randomly selects three different students to answer questions. The f
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The likelihood of selecting one girl is calculated as \frac{5}{12}. This is based on having 5 girls within a total of 12 students, and the probability of an event can be expressed as: \frac{\text{# of things you want}}{\text{# of things are possible}}.

Using the same reasoning, for the next student, we have reduced the number of students by 1, leading to 11 possible outcomes instead of 12, giving us:\frac{7}{11}, which represents the probability of selecting a boy as the second choice.

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2 months ago
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