Consumer Reports scored cars on quality and cost. Spearman's rank correlation coefficient was calculated using Statdisk and the output is provided below. Based on these results, does quality appear to be associated with price? What was the sample size used?
a.There is sufficient evidence to conclude that the quality and price of a car are associated. We cannot determine sample size from the output displayed.
b.There is insufficient evidence to conclude that the quality and price of a car are associated. We cannot determine sample size from the output displayed.
c.There is sufficient evidence to conclude that the quality and price of a car are associated. There were ten cars used in the sample.
d.There is insufficient evidence to conclude that the quality and price of a car are associated. There were ten cars used in the sample.

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cchilabert cchilabert · Answer 1 · 2020-02-21T15:09:33+01:00

Answer:

d.There is insufficient evidence to conclude that the quality and price of a car are associated. There were ten cars used in the sample.

Step-by-step explanation:

Hello!

You have two variables X₁: quality score of a car and X₂: the price of a car.

It was analyzed id there is an association between the quality and the price.

The null hypothesis of a Spearman's rank correlation test is:

H₀: There is no association between the quality and the price of cars.

The researcher failed to reject the null hypothesis which means that there is no association between the variables of interest.

The sample size is listed in the output n= 10 consumer reports.

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