STATISTICAL TECHNIQUES AND TOOLS
SAMPLING DISTRIBUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A recent survey finds that 35% of US households have at least one dog. You randomly choose 50 households to ask if they have a dog. Calculate the mean and standard deviation of this as a binomial.
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not enough information to calculate
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Explanation:
Detailed explanation-1: -Question: A recent survey finds that 35% of US households have at least one dog. You randomly choose 50 households to ask if they have a dog. Could you use the Normal Approximation for this? Yes.
Detailed explanation-2: -The standard deviation of the sampling distribution of means equals the standard deviation of the population divided by the square root of the sample size.
Detailed explanation-3: -When the sample size is at least 30 the sample mean is normally distributed. When the population is normal the sample mean is normally distributed regardless of the sample size.
There is 1 question to complete.