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To give a 98% confidence interval for a population mean , you would use the critical value?

To give a 98% confidence interval for a population mean μ, you would use the critical value? Please explain how to find this z-score and how to find the margin of error as well. Im really struggling with confidence intervals.

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The critical value is  Z ​ 0 . 0 1 ​ ​  =2.3263 margin of error=  Z ∗ s t a... View the full answer

3 comments
  • Kindly note that Z is the critical value
    • Amkasyoka
    • May 14, 2018 at 9:22pm
  • how did you get 2.3263? did you use software. I don't understand that part
    • sdossa
    • May 14, 2018 at 9:47pm
  • The value 2.3263 can be obtained from the z-table by reading the value of Z corresponding to a 1% level of significance. Alternatively the excel function NORMSINV(0.01) can be used
    • Amkasyoka
    • May 14, 2018 at 9:56pm

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Other Answers

z score=(Sample mean-Population Mean)/Standard deviation critical... View the full answer

Confidence Interval when population standard deviation is given:  μ... View the full answer

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