# Mystatlab Statistics Homework Help - Answers

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I need help with my mathxl class, there are multiple assignments and tests. please help me out. there are about 5 more chapters i need to to they are all due on the sixteenth of this month....
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Normal Probability Distributions
2 assignments consisting of 10 - 15 questions each. Some of them are multiple choice. Assignment is on Pearson website however I can send a picture of each question....
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Quick Math Homework Task to be completed
There are 3 parts to the assignment left, with each being 12 questions each and 2 short quizzes that need to be completed. They are all on Mystatslab....
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The file P02_10.xlsx contains midterm and final exam scores for 96 students in a corporate finance course

1. The file P02_10.xlsx contains midterm and final exam scores for 96 students in a corporate finance course. Each row contains the two exam scores for a given student, so you might expect them to be positively correlated.

a) Create a scatterplot of the final exam score (Y) versus the midterm score (X). Based on the visual evidence, would you say that the scores for the two exams are strongly related? Is the relationship a linear one? Superimpose a trend line on the scatterplot.

b) Estimate a simple linear regression equation using the given data and interpret it.

c)What is the value of Rin this model? Explain Rin words.

d) Is this model statistically significant? What is the p-value? Use alpha=0.05.

e) Develop a residual plot using excel. Are any assumptions violated? Explain.

f)Draw a normal probability plot of residuals by finding out the Z-score of the residuals. Use Excel. Plot Z-score at the horizontal axis and residuals at the vertical axis. Do the residuals seem normally distributed? Explain.

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