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A level Maths statistic problem

For a particular disease, 70% of patients are successfully cured with the current drug available.
Drug companies claim that a new drug, Aptok, will cure a greater proportion of patients than the current drug.
To test the claim, a random sample of 35 patients with the disease are treated with Aptok.
A test is carried out at the 1% significance level to determine whether the new drug cures a greater proportion of patients than the current drug.
a)(l)State appropriate null and alternative hypotheses for this test.
(a)(ll)Find the critical region for this test.
(b)State,in context,the conclusion of the test if 30 patients are successfully cured.

Can anyone help me ?

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