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) In a recent survey, 83% of the community favored building a police substation in their neighborhood. You randomly select 18 citizens and ask each if he or she thinks the community needs a police substation. Decide whether you can use the normal distribution to approximate the binomial distribution. If so, find the mean and standard deviation. If not, explain why.

Respuesta :

joaoostrowski

Answer:

No, you should not approximate using the normal distribution because your sample size is too small.

Step-by-step explanation:

You can use the normal distribution in the following cases:

  • Your sample size is larger than 25
  • You know that the sample size comes from a normally distributed population.

Based on the rule of thumb, I would collect at least 7 more answers before using the normal distribution.

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