Determine the interval of 95% confidence for the average heights of the population

Determine the interval of 95% confidence for the average heights of the population using the following information:

The average height of a random sample of 400 people from a city is 1.75 m. It is known that the heights of the population are random variables that follow a normal distribution with a variance of 0.16.

Confidence Interval Formula = ( x̄ – z * ơ / √n) to ( x̄ + z * ơ / √n)

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