When constructing a hypothesis test for the population mean

When constructing a hypothesis test for the population mean when the standard deviation is known for the population, what type of distribution should we use to determine the critical value?

1. The normal distribution should be used.

2. The binomial distribution should be used.

3. The statistical distribution should be used.

4. The null distribution should be used.

Solution

When constructing a hypothesis test for the population mean when the standard deviation is known for the population, what type of distribution should we use to determine the critical value?

1. The normal distribution should be used.

because we know the SD of population we can use normal distribution