Textbook ExpertVerified Tutor
29 Nov 2021
Given information
Use the following information to answer the next five exercises. Two metal alloys are being considered as material for ball bearings. The mean melting point of the two alloys is to be compared. pieces of each metal are being tested. Both populations have normal distributions. The following table is the result. It is believed that Alloy Zeta has a different melting point.
Step-by-step explanation
Step 1.
The null and alternative hypotheses are as stated below,
where and are the null and alternative hypotheses respectively.
Hence, the hypotheses are stated.
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