Question: Having trouble finding z subscript alpha.... can anyone help me figure this out? A certain drug can be used to reduce the acid produced by

Having trouble finding z subscript alpha.... can anyone help me figure this out?

A certain drug can be used to reduce the acid produced by the body and heal damage to the esophagus due to acid reflux. The manufacturer of the drug claims that more than 92

92% of patients taking the drug are healed within 8 weeks. In clinicaltrials, 215

215 of 229

229 patients suffering from acid reflux disease were healed after 8 weeks. Test themanufacturer's claim at the alpha equals 0.01

=0.01 level of significance.

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