Hi, in this question:
A cola company that produces cola A claims that consumers prefer their cola to a competitor’s cola, cola B. Suppose 55 % of the cola drinking public prefers cola A to cola B. If the company takes a random sample of 200 cola drinkers, what is the probability that between 54% and 58% of the 200 cola drinkers will prefer cola A to cola B?
I know the formula to use but since the question asks between 54% and 58% how does that change the formula for the sampling distribution of the sample portion? Thanks
Before you use the CLT to help you, you need to know what exactly the
question is asking you about.
Letbe the number of cola drinkers will prefer cola A to cola B
inside that 200 samples.
1) What is the distribution of
2)Can you relate the above probability withthe probability that between 54% and 58% of the 200 cola drinkers will prefer cola A to cola B?
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