The sales representative for a manufacturer of a new product claims that the product will increase output per machine by more than 30 units per hour. A line manager installs the product on 15 of the machines and finds that the average increase was only 26 with a standard deviation of 6.2. What are the appropriate null and alternative hypotheses?     H0 : μ = 30 and H1: μ ≠ 30     H0 : μ < 30 and H1: μ > 30     H0 : μ = 30 and H1: μ > 30     H0 : μ > 30 and H1: μ ≤ 30

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