Question: I have a statistics question. I'm not sure how to use the Z test for a two-tailed test with this scenario: n=220 mean=22 (hypothesized mean)

I have a statistics question. I'm not sure how to use the Z test for a two-tailed test with this scenario:

n=220

mean=22 (hypothesized mean)

using 90% confidence interval

standard deviation = 6

In this case - the hypothesis will be h0 = p0 < 22; h1 = p>22

Am I missing anything else?

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