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Find the correlation coefficient and regression line.
You are given the following data.
Number of Absences
Final Grade
0
96
1
91
2
78
83
3
75
62
4
70
5
68
6
56
1. Make a scatter plot for the data.
2. Find the correlation coefficient for the data.
3. Find the equation for the regression line for the data, and predict the final grade of a student who misses 3.5 days.
Organize data into a frequency distribution. How many classes would you propose? What value would you propose for class interval?
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Develop a 99% confidence interval for the population proportion.
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Formulate the hypotheses to test to see if the mean of the population is at least 12 ounces.
Researchers at a pharmaceutical company have found that the effective time duration of a safe dosage of a pain relief drug is normally distributed with mean 2 hours and standard deviation 0.3 hour.
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