11. A sample of 30 used cars sold by an auto dealership in 2009 revealed that...

11. A sample of 30 used cars sold by an auto dealership in 2009 revealed that the correlation between selling price and number of kilometres driven was −0.45. We want to test, at the 1% significance level, if there is a negative linear relationship in the population between selling price and number of kilometres driven. According to the p-value given in the table, our conclusion would be to reject the null hypothesis and conclude that the sample evidence supports the claim of a negative linear relationship at the 1% significance level.

True or False

15.

For any given number of hours studied, we expect actual grade to lie within about +/- 18.24% of the predicted mean grade ______% of the time. Do Not include the % sign. Use the Empirical rule (68-95-99.7) to answer this.

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Dear 15 th question needs further information to answer... But yet I not skipped , since I like to help you in your studies...Your satisfaction is more important, I provided answers with detailed explanation.. Dear I need your help and support... Please THUMBS UP... Your support saves me...

11) True

Reason : P value is less than signicance leve , so we Reject Null Hypothesis. Detailed solution is given below

15) Precise Answer cannot be provided , because some information is missing. But I recommend 95% of the time as a general rule...

orchestra answered 1 year ago

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