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Pitanje 2
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Pitanje 3
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Which of these statements describes a key distinction between an observational study and an experimental study?
Match the description of the study design with the type of study being conducted.
| Stavka koja se može prevući | arrow_right_alt | Odgovarajuća stavka |
|---|---|---|
How do business customers feel about the level of support they receive? The business randomly selects 200 customers and asks them to share their opinions. | arrow_right_alt | An experimental study |
Do truck drivers get into more accidents than people who drive SUVs? Researchers use police records of automobile accidents over the past year and vehicle registrations to compare the percentage of drivers of vehicles of each type that get into accidents | arrow_right_alt | A survey |
Does a certain multivitamin help people lose weight? Researchers select 100 people to participate in the study and assign them to 2 groups at random. One group is given the multivitamin. The other group is given a fake pill. The weights of all of the participants are recorded daily for the next three months. | arrow_right_alt | An observational study that is not a survey |
Mai is using the quadratic formula to solve two different quadratic equations.
For the first equation, she writes
For the second equation, she writes
How many real solutions will each equation have? Explain how you know.
Here are graphs of two functions f and g.
Which statements are true about the graph of
This lesson is from Illustrative Mathematics. Algebra 1, Unit 7, Lesson 1. Internet. Available from https://curriculum.illustrativemathematics.org/HS/teachers/3/7/1/preparation.html ; accessed 29/July/2021.
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