Use the z-table to find the critical z-value for each of the indicated level of confidence? 99%z= ,98%z=,95%z=,80%z=

Question

Use the z-table to find the critical z-value for each of the indicated level of confidence? 99%z= ,98%z=,95%z=,80%z=

Answer 1

Hello, thank you for taking the time to post your question!

You can find these critical values using either a Z table or technology like Microsoft Excel. When I do that I find the indicated values to be

99%: 2.576

98%: 2.326

95%: 1.960

80%: 1.282

I hope that helps get you moving in the right direction! Feel free to reach out if you have any additional questions beyond that :)

Answer 2

No, the question is so old my Z tables have become invalid. Who answers 20 year old questions?