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Hypothesis testing a Process with Z-Distribution

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1. A new process has been implemented and it is stated to have an average cycle time of 120 seconds. A sample of 50 cycles yielded an average cycle time of 115 seconds, with a standard deviation of 2 seconds.
A. Set up the null and alternative hypothesis
B. Test your hypothesis using a level of significance of 0.05
A new process has been implemented and it is stated to have an average cycle time of 120 seconds. A sample of 50 cycles yielded an average cycle time of 115 seconds, with a standard deviation of 2 seconds.
A. Set up the null and alternative hypothesis
B. Test your hypothesis using a level of significance of 0.05

2. A. Define the Z distribution
B. Find Z if X = 980, u = 1000, The standard deviation is 50, and the number of samples is 49.

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