Compute correlation between two variable by hypothesis test

Assignment Help Basic Statistics

Reference no: EM13111848

Your statistics teacher has repeatedly told class that more you study, the better you will do on tests. You make decision to verify this statement. You arbitarily choose 12 classmates and ask them how long they studied for last test and what grade they made. Here are the data:

Student Hours studied   Grade
1               17                  91
2               12              73
3    8                   70
4               14                  86
5               10                  71
6               3                    62
7               20    87
8 11                  76
9                7                   68
10    16                 84
11               9                  66
12              15                 83

1. Use Hypothesis testing to compute te correlation between these two variables and these it for significance. Test at .01 level of significance.

a. Step 1: State Hypothesis
b. Step 2: Set Criteria
c. Step 3: Calculate Sample Statistic
i. Use excel to compute r value
d. Step 4: Make a decision
i. Did you reject null/fail to reject null
ii. Define your conclusions in your own words

2. Another classmate told you that she studied 25 hours. What would you forecast her score on test?
a. Write the regression equation?
b. Use regression equation to answer question

Reference no: EM13111848

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