Is there a relationship between brain size and intelligence? The Performance IQ scores (PIQ) and brain sizes (in pixels, as measured by MRI scans) of 40 subjects were measured. A researcher used simple linear regression using brain size to predict PIQ and reported the following results.

Variable

Coefficient

Standard error

Intercept

1.74

42.39

Brain size

0.0001203

0.0000465

The researcher decided to ignore the p-value from the test of the null hypothesis: LaTeX: H_0 H 0 : LaTeX: \beta_1 ? 1 = 0 stating that such a test is meaningless when the slope is obviously very close to zero.Use the Likert scale below to indicate your level of agreement with this researcher and then justify (explain) your option.

I am inclined to disagree. Please evaluate the rationale below and redirect where necessary. THANK YOU!!

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