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Pani-rosa [81]
2 years ago
14

Introduction: In a course called Introduction to Statistics at Carnegie Mellon University, a professor wants to gain insight int

o his students’ performance on the final exam by analyzing exam grades from earlier in the semester. The data set describes 105 students. The data is in gradebook.xls. Support your answers using concepts from Unit 3. Follow the instructions for creating a poster. Research questions (answer both): In general, which is the best predictor of a student’s score on the final exam, the score on the first midterm or the second midterm? Use Unit 3 concepts to support your answer. What is the predicted score on the final exam for a student who scores a 77 on the first midterm and an 88 on the second midterm?
Mathematics
1 answer:
Vikentia [17]2 years ago
7 0
Nakeuenwbskeijwkwgne
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Brice has 400 toy cars. Of the toy cars, 15% are red, 40% are green, and the rest are multicolor.
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Answer:

180

Step-by-step explanation:

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Twenty different books are to be put on five book shelves, each of which holds at least twenty books.
lapo4ka [179]
Hello There!

The total number of different arrangements is 10,628.

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8 0
3 years ago
Which expression uses the greatest common factor and distributive property to find 10+50?
Rudiy27
Ab+ac=a(b+c) where a is the greatest common factor
find greatest common factor of 10 and 50
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3 0
3 years ago
Latoya drives 8 miles to work in 13 minutes. What is her average rate, in miles per hour, when rounded to the nearest wholes num
Mama L [17]

Answer:

37 miles per hour

Step-by-step explanation:

To find the average rate (average speed) of Latoya in miles per hour, you would divide the distance traveled (in miles) by the time taken to travel (in hours).

So we know that Latoya traveled 8 miles in 13 minutes. We cannot divide 8 by 13, because 13 is in minutes, not hours. We must convert 13 minutes to hours before dividing.

There are 60 minutes in one hour, so to covert minutes into hours, we would divide the minutes (13) by 60. Doing this would give you 13/60. You cannot simplify the fraction 13/60, because 13 is a prime number. It would be best to just leave it as it is for now. So Latoya traveled for 13/60 hours.

Now, to find her average rate in miles per hour, you divide the distance traveled in miles (8 miles) by the time it took to travel in hours (13/60):

8 ÷ 13/60

Remember, a ÷ b/c = a × c/b. Using this:

8 ÷ 13/60 = 8 × 60/13 = 480/13 ≈ 37 rounded to the nearest whole number.

Latoya had an average rate of about 37 miles per hour.

I hope this helps. :)

6 0
2 years ago
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