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AVprozaik [17]
3 years ago
8

Researchers doing a study comparing time spent on social media and time spent on studying randomly sampled 200 students at a maj

or university. They found that students in the sample spent an average of 2.3 hours per day on social media and an average of 1.8 hours per day on studying. If all the students at the university in fact spent 2.2 hours per day on studying, with a standard deviation of 2 hours, and we find the probability of observing a sample mean of 1.8 hours studying has an extremely low probability, we say that observed time is: statistically wrong. statistically unlikely. statistically significant. statistically rare.
Mathematics
1 answer:
larisa [96]3 years ago
5 0
Dachshund know what is this man what do frog is making
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Zina [86]

Answer:

34 degrees

Step-by-step explanation:

If ABD = 64, and CBD is 30, we can use PWP( Part Whole Postulate)

Step 1.CBD + ABC = ABD

Step 2. Substitute

30 + ABC = 64

Step 3. Isolate ABC

34 = ABC

ABC is 34 degrees

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Answer: Her score for the 6th game as 37.
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