Fort he attached dataset perform a z-testfor proportion and z-test for both brand names. Find the cutoff value for z, sample proportion, standard error, confidence intervals, one and two-tailed test, critical values, and lower/upper limits.
Null Hypothesis: The proportion of Oreo as actual brand is equal to that as subjected identified brand.
Alternate Hypothesis: The proportion of Oreo as actual brand is not equal to that as subject identified brand.
Two Sample Hypothesis Z Test for Proportion
Actual Brand Subject Identified Brand
Sample Size 42 …
The expert examines a data analysis for Oreo and marketing pantry cookies.