Find the best predicted value for the level of Customer Satisfaction given that the Cost is 13. Use a significance level of 0.05.

MATLAB: An Introduction with Applications
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Chapter1: Starting With Matlab
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A researcher is interested whether there is a linear correlation between cost (in dollars) of internet service per month and customer satisfaction on a scale of 1 - 10 (with a 1 being extremely dissatisfied and 10 extremely satisfied). The researcher only includes internet service with similar download speed. The sample he collected is below.

Cost (x) 15 18 17 11 9 11 12 19 18 22
Satisfaction (y) 6 8 10 4 9 6 3 5 2 10

Find the best predicted value for the level of Customer Satisfaction given that the Cost is 13. Use a significance level of 0.05.
Round your answer to 1 decimal place, if needed.

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