Draw the conclusion by using the five-step hypothesis testing procedure. Show your solution either using the critical value method or the p- value method. The manufacturer of a local cellphone brand...

Draw the conclusion by using the five-step hypothesis testing procedure. Show your solution either using the critical value method or the p- value method.

The manufacturer of a local cellphone brand claims that 65% of their customers believed that the cellphones they bought from them are as good as the international brands. To test the claim, they surveyed one gadget store. Out of the 90 randomly selected shoppers, 75 of them
agreed with the manufacturer’s claim. Is the claim of the manufacturer valid? Test at 0.01 significance level.