Question: part a and b please A study claims that over 50% of those who suffer from osteoarthritis receive measurable relief from an ingredient produced by

part a and b please

A study claims that over 50% of those who suffer from osteoarthritis receive measurable relief from an ingredient produced by a particular species of mussel. To test this claim, the mussel extract is to be given to a group of 68 osteoarthritis patients and the critical region is defined to be x

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