In professor friedman's economics course the correlation between the students' total scores before the final examination and their final examination scores is r = 0.52. the pre-exam totals for all students in the course have mean 300 and standard deviation 37. the final exam scores have mean 70 and standard deviation 12. professor friedman has lost julie's final exam but knows that her total before the exam was 284. he decides to predict julie's final exam score from her pre-exam total. question 1. calculate the slope and intercept of the least squares regression line where the x-variable is pre-exam total score and the y-variable is final exam score. slope (use 4 decimal places in your answer) intercept (use 4 decimal places in your answer) question 2. what is the value of julie's final exam score predicted by the least squares

1/4 because there is 4 grades.

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents

ranks (& how to earn them):

-beginner (needs at least 0 points & 0 brainliest answers)

- hand (needs at least 100 points & 0 brainliest answers)

-ambitious   (needs at least 250 points & 0 brainliest answers)

-virtuoso (needs at least 500 points & 5 brainliest answers)

-expert   (needs at least 1,000 points & 10 brainliest answers)

-ace (needs at least 3,000 points & 15 brainliest answers)

-genius   (needs at least 15,000 points & 50 brainliest answers)

how to award brainliest:

you must wait until 2 people answer to award brainliest. i'm pretty sure that it should be next to the "" and "comments" buttons.  

answer: b

step-by-step explanation: