please solve this questions in attach fileWe measured the weight of two groups of patients and obtained the following results: Patients with

hypertension:

$n_1=29\frac{,}{b}ar(x_{n_1})=74\mathrm{.}1\frac{,}{b}ar(s_{n_1}^2)=251$

Patients without hypertension:

$n_2=122\frac{,}{b}ar(x_{n_2})=81\mathrm{.}6\frac{,}{b}ar(s_{n_2}^2)=302\mathrm{.}6$

Doctor asks: $"$Is hypertension correlated with weight?" At the $5\%$ level, test the hypothesis of equality of

means.

Seven patients had their blood pressure measured before and after medication. Test whether the drug is

effective at the level $=0\mathrm{.}05$

We have a selection specified using frequencies $n_j$

$x,1,2,3,4,5,6,7,8,9$

$n_i,4,8,16,15,8,7,8,3,2$