Newly purchased tires of a particular type are supposed to be filled to a pressure of 30 psi. Let denote the true average pressure. A test is to be carried out to decide whether differs from the target value. Determine the P-value for each of the following z test sta values. (Round your answers to four decimal places.) (a) 2.19 (b) -1.77 (c) -0.53 USE SALT

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