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14 Dec 2021
Given information
A new laundry detergent is tested on consumers. Of interest is the proportion of consumers who prefer the new brand over the leading competitor. A study is done to test this.
Step-by-step explanation
Step 1.
Assuming the proportion of customers preferring the new brand over the existing or competitor is , then
The null hypothesis is as follows:
The alternative hypothesis is as follows:
This shows that this hypothesis test is for single proportions.
Hence, option .
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