Answer
Both P-values are higher than 0.2, so we can not reject the null hypotheses.
There is not enough evidence to conclude that there is a linear relation between MRI Count and IQ.
There is not enough evidence to conclude that there is a linear relation between gender and IQ.
Work Step by Step
See the results from item (d), in MINITAB:
1) $H_0: β_1=0$ versus $H_1: β_1\ne0$
$t_0=1.27$ with a P-value $=0.221$. Do not reject the null hypothesis.
2) $H_0: β_2=0$ versus $H_1: β_2\ne0$
$t_0=-1.23$ with a P-value $=0.234$. Do not reject the null hypothesis.
