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Ho: H batteries made with new procedure d. What would be the nondirectional alternative hypothesis in symbols ? Hy: H batteries made with new procedure

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Ho: H batteries made with new procedure d. What would be the nondirectional alternative hypothesis in symbols ? Hy: H batteries made with new procedure e. For your nondirectional (two -tailed ) null hypothesis , what is the critical value of z with an alpha level of 0.05 ? (This is the value of z that defines the limit of the critical region ). f. Calculate the z for this sample . IF YOUR ANSWER IS 2.53 , CONGRATUALTIONS

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