Question: A sample of 35 observations is selected from a normal population. The sample mean is 26, and the population standard deviation is 4. Conduct the

A sample of 35 observations is selected from a normal population. The sample mean is 26, and the population standard deviation is 4. Conduct the following test of hypothesis using the 0.05 significance level.

H₀: 25

H₁: > 25

Im trying to figure out the decision rule but i can't figure out how to compute z

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